diff --git a/.buildkite/pipelines/es_snapshots/verify.yml b/.buildkite/pipelines/es_snapshots/verify.yml
index 61212e1fcf0a8..b9aa0e0e3727a 100755
--- a/.buildkite/pipelines/es_snapshots/verify.yml
+++ b/.buildkite/pipelines/es_snapshots/verify.yml
@@ -19,7 +19,7 @@ steps:
   - command: .buildkite/scripts/steps/build_kibana.sh
     label: Build Kibana Distribution and Plugins
     agents:
-      queue: c2-8
+      queue: c2-16
     key: build
     if: "build.env('KIBANA_BUILD_ID') == null || build.env('KIBANA_BUILD_ID') == ''"
 
diff --git a/.buildkite/pipelines/flaky_tests/pipeline.js b/.buildkite/pipelines/flaky_tests/pipeline.js
new file mode 100644
index 0000000000000..1d390ed0d1b63
--- /dev/null
+++ b/.buildkite/pipelines/flaky_tests/pipeline.js
@@ -0,0 +1,52 @@
+const stepInput = (key, nameOfSuite) => {
+  return {
+    key: `ftsr-suite/${key}`,
+    text: nameOfSuite,
+    required: false,
+    default: '0',
+  };
+};
+
+const OSS_CI_GROUPS = 12;
+const XPACK_CI_GROUPS = 13;
+
+const inputs = [
+  {
+    key: 'ftsr-override-count',
+    text: 'Override for all suites',
+    default: 0,
+    required: true,
+  },
+  {
+    key: 'ftsr-concurrency',
+    text: 'Max concurrency per step',
+    default: 20,
+    required: true,
+  },
+];
+
+for (let i = 1; i <= OSS_CI_GROUPS; i++) {
+  inputs.push(stepInput(`oss/cigroup/${i}`, `OSS CI Group ${i}`));
+}
+
+for (let i = 1; i <= XPACK_CI_GROUPS; i++) {
+  inputs.push(stepInput(`xpack/cigroup/${i}`, `Default CI Group ${i}`));
+}
+
+const pipeline = {
+  steps: [
+    {
+      input: 'Number of Runs',
+      fields: inputs,
+    },
+    {
+      wait: '~',
+    },
+    {
+      command: '.buildkite/pipelines/flaky_tests/runner.sh',
+      label: 'Create pipeline',
+    },
+  ],
+};
+
+console.log(JSON.stringify(pipeline, null, 2));
diff --git a/.buildkite/pipelines/flaky_tests/pipeline.sh b/.buildkite/pipelines/flaky_tests/pipeline.sh
new file mode 100755
index 0000000000000..6335cd5490af0
--- /dev/null
+++ b/.buildkite/pipelines/flaky_tests/pipeline.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+node .buildkite/pipelines/flaky_tests/pipeline.js | buildkite-agent pipeline upload
diff --git a/.buildkite/pipelines/flaky_tests/runner.js b/.buildkite/pipelines/flaky_tests/runner.js
new file mode 100644
index 0000000000000..46c390ce455ca
--- /dev/null
+++ b/.buildkite/pipelines/flaky_tests/runner.js
@@ -0,0 +1,82 @@
+const { execSync } = require('child_process');
+
+const keys = execSync('buildkite-agent meta-data keys')
+  .toString()
+  .split('\n')
+  .filter((k) => k.startsWith('ftsr-suite/'));
+
+const overrideCount = parseInt(
+  execSync(`buildkite-agent meta-data get 'ftsr-override-count'`).toString().trim()
+);
+
+const concurrency =
+  parseInt(execSync(`buildkite-agent meta-data get 'ftsr-concurrency'`).toString().trim()) || 20;
+
+const testSuites = [];
+for (const key of keys) {
+  if (!key) {
+    continue;
+  }
+
+  const value =
+    overrideCount || execSync(`buildkite-agent meta-data get '${key}'`).toString().trim();
+
+  testSuites.push({
+    key: key.replace('ftsr-suite/', ''),
+    count: value === '' ? defaultCount : parseInt(value),
+  });
+}
+
+const steps = [];
+const pipeline = {
+  env: {
+    IGNORE_SHIP_CI_STATS_ERROR: 'true',
+  },
+  steps: steps,
+};
+
+steps.push({
+  command: '.buildkite/scripts/steps/build_kibana.sh',
+  label: 'Build Kibana Distribution and Plugins',
+  agents: { queue: 'c2-8' },
+  key: 'build',
+  if: "build.env('BUILD_ID_FOR_ARTIFACTS') == null || build.env('BUILD_ID_FOR_ARTIFACTS') == ''",
+});
+
+for (const testSuite of testSuites) {
+  const TEST_SUITE = testSuite.key;
+  const RUN_COUNT = testSuite.count;
+  const UUID = TEST_SUITE + process.env.UUID;
+
+  const JOB_PARTS = TEST_SUITE.split('/');
+  const IS_XPACK = JOB_PARTS[0] === 'xpack';
+  const CI_GROUP = JOB_PARTS.length > 2 ? JOB_PARTS[2] : '';
+
+  if (RUN_COUNT < 1) {
+    continue;
+  }
+
+  if (IS_XPACK) {
+    steps.push({
+      command: `CI_GROUP=${CI_GROUP} .buildkite/scripts/steps/functional/xpack_cigroup.sh`,
+      label: `Default CI Group ${CI_GROUP}`,
+      agents: { queue: 'ci-group-6' },
+      depends_on: 'build',
+      parallelism: RUN_COUNT,
+      concurrency: concurrency,
+      concurrency_group: UUID,
+    });
+  } else {
+    steps.push({
+      command: `CI_GROUP=${CI_GROUP} .buildkite/scripts/steps/functional/oss_cigroup.sh`,
+      label: `OSS CI Group ${CI_GROUP}`,
+      agents: { queue: 'ci-group-4d' },
+      depends_on: 'build',
+      parallelism: RUN_COUNT,
+      concurrency: concurrency,
+      concurrency_group: UUID,
+    });
+  }
+}
+
+console.log(JSON.stringify(pipeline, null, 2));
diff --git a/.buildkite/pipelines/flaky_tests/runner.sh b/.buildkite/pipelines/flaky_tests/runner.sh
new file mode 100755
index 0000000000000..b541af88a408a
--- /dev/null
+++ b/.buildkite/pipelines/flaky_tests/runner.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+UUID="$(cat /proc/sys/kernel/random/uuid)"
+export UUID
+
+node .buildkite/pipelines/flaky_tests/runner.js | buildkite-agent pipeline upload
diff --git a/.buildkite/pipelines/hourly.yml b/.buildkite/pipelines/hourly.yml
index 279c8cf96bfe3..0edba11836fcd 100644
--- a/.buildkite/pipelines/hourly.yml
+++ b/.buildkite/pipelines/hourly.yml
@@ -9,7 +9,7 @@ steps:
   - command: .buildkite/scripts/steps/build_kibana.sh
     label: Build Kibana Distribution and Plugins
     agents:
-      queue: c2-8
+      queue: c2-16
     key: build
     if: "build.env('KIBANA_BUILD_ID') == null || build.env('KIBANA_BUILD_ID') == ''"
 
@@ -98,7 +98,7 @@ steps:
   - command: .buildkite/scripts/steps/functional/oss_misc.sh
     label: 'OSS Misc Functional Tests'
     agents:
-      queue: ci-group-4d
+      queue: ci-group-6
     depends_on: build
     timeout_in_minutes: 120
     retry:
diff --git a/.buildkite/pipelines/pull_request/apm_cypress.yml b/.buildkite/pipelines/pull_request/apm_cypress.yml
new file mode 100644
index 0000000000000..8dcdc6c4b5f39
--- /dev/null
+++ b/.buildkite/pipelines/pull_request/apm_cypress.yml
@@ -0,0 +1,11 @@
+steps:
+  - command: .buildkite/scripts/steps/functional/apm_cypress.sh
+    label: 'APM Cypress Tests'
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
diff --git a/.buildkite/pipelines/pull_request/base.yml b/.buildkite/pipelines/pull_request/base.yml
new file mode 100644
index 0000000000000..404bfb273b6f7
--- /dev/null
+++ b/.buildkite/pipelines/pull_request/base.yml
@@ -0,0 +1,155 @@
+steps:
+  - command: .buildkite/scripts/lifecycle/pre_build.sh
+    label: Pre-Build
+
+  - wait
+
+  - command: .buildkite/scripts/steps/build_kibana.sh
+    label: Build Kibana Distribution and Plugins
+    agents:
+      queue: c2-16
+    key: build
+    if: "build.env('KIBANA_BUILD_ID') == null || build.env('KIBANA_BUILD_ID') == ''"
+
+  - command: .buildkite/scripts/steps/functional/xpack_cigroup.sh
+    label: 'Default CI Group'
+    parallelism: 13
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    key: default-cigroup
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: CI_GROUP=Docker .buildkite/scripts/steps/functional/xpack_cigroup.sh
+    label: 'Docker CI Group'
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    key: default-cigroup-docker
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/functional/oss_cigroup.sh
+    label: 'OSS CI Group'
+    parallelism: 11
+    agents:
+      queue: ci-group-4d
+    depends_on: build
+    timeout_in_minutes: 120
+    key: oss-cigroup
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/functional/oss_accessibility.sh
+    label: 'OSS Accessibility Tests'
+    agents:
+      queue: ci-group-4d
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/functional/xpack_accessibility.sh
+    label: 'Default Accessibility Tests'
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/functional/oss_firefox.sh
+    label: 'OSS Firefox Tests'
+    agents:
+      queue: ci-group-4d
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/functional/xpack_firefox.sh
+    label: 'Default Firefox Tests'
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/functional/oss_misc.sh
+    label: 'OSS Misc Functional Tests'
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/functional/xpack_saved_object_field_metrics.sh
+    label: 'Saved Object Field Metrics'
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - command: .buildkite/scripts/steps/test/jest_integration.sh
+    label: 'Jest Integration Tests'
+    agents:
+      queue: n2-4
+    timeout_in_minutes: 120
+    key: jest-integration
+
+  - command: .buildkite/scripts/steps/test/api_integration.sh
+    label: 'API Integration Tests'
+    agents:
+      queue: n2-2
+    timeout_in_minutes: 120
+    key: api-integration
+
+  - command: .buildkite/scripts/steps/test/jest.sh
+    label: 'Jest Tests'
+    agents:
+      queue: c2-16
+    timeout_in_minutes: 120
+    key: jest
+
+  - command: .buildkite/scripts/steps/lint.sh
+    label: 'Linting'
+    agents:
+      queue: n2-2
+    key: linting
+
+  - command: .buildkite/scripts/steps/checks.sh
+    label: 'Checks'
+    agents:
+      queue: c2-4
+    key: checks
+
+  - command: .buildkite/scripts/steps/storybooks/build_and_upload.sh
+    label: 'Build Storybooks'
+    agents:
+      queue: c2-4
+    key: storybooks
diff --git a/.buildkite/pipelines/pull_request/post_build.yml b/.buildkite/pipelines/pull_request/post_build.yml
new file mode 100644
index 0000000000000..4f252bf8abc11
--- /dev/null
+++ b/.buildkite/pipelines/pull_request/post_build.yml
@@ -0,0 +1,6 @@
+steps:
+  - wait: ~
+    continue_on_failure: true
+
+  - command: .buildkite/scripts/lifecycle/post_build.sh
+    label: Post-Build
diff --git a/.buildkite/pipelines/pull_request/security_solution.yml b/.buildkite/pipelines/pull_request/security_solution.yml
new file mode 100644
index 0000000000000..974469a700715
--- /dev/null
+++ b/.buildkite/pipelines/pull_request/security_solution.yml
@@ -0,0 +1,11 @@
+steps:
+  - command: .buildkite/scripts/steps/functional/security_solution.sh
+    label: 'Security Solution Tests'
+    agents:
+      queue: ci-group-6
+    depends_on: build
+    timeout_in_minutes: 120
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
diff --git a/.buildkite/scripts/common/env.sh b/.buildkite/scripts/common/env.sh
index 21d2c9bb7a8de..ea8ebca0a7dbe 100755
--- a/.buildkite/scripts/common/env.sh
+++ b/.buildkite/scripts/common/env.sh
@@ -45,12 +45,20 @@ if is_pr; then
   export ghprbActualCommit="$BUILDKITE_COMMIT"
   export BUILD_URL="$BUILDKITE_BUILD_URL"
 
-  # set_git_merge_base # TODO for PRs
+  set_git_merge_base
+
+  # For backwards compatibility
+  export PR_MERGE_BASE="$GITHUB_PR_MERGE_BASE"
+  export PR_TARGET_BRANCH="$GITHUB_PR_TARGET_BRANCH"
 else
   export ELASTIC_APM_ACTIVE=true
   export CHECKS_REPORTER_ACTIVE=false
 fi
 
+# These are for backwards-compatibility
+export GIT_COMMIT="${BUILDKITE_COMMIT:-}"
+export GIT_BRANCH="${BUILDKITE_BRANCH:-}"
+
 export FLEET_PACKAGE_REGISTRY_PORT=6104
 export TEST_CORS_SERVER_PORT=6105
 
diff --git a/.buildkite/scripts/common/util.sh b/.buildkite/scripts/common/util.sh
index d536f1a37acfd..a884a147577c9 100755
--- a/.buildkite/scripts/common/util.sh
+++ b/.buildkite/scripts/common/util.sh
@@ -74,3 +74,15 @@ retry() {
     fi
   done
 }
+
+set_git_merge_base() {
+  GITHUB_PR_MERGE_BASE="$(buildkite-agent meta-data get merge-base --default '')"
+
+  if [[ ! "$GITHUB_PR_MERGE_BASE" ]]; then
+    git fetch origin "$GITHUB_PR_TARGET_BRANCH"
+    GITHUB_PR_MERGE_BASE="$(git merge-base HEAD FETCH_HEAD)"
+    buildkite-agent meta-data set merge-base "$GITHUB_PR_MERGE_BASE"
+  fi
+
+  export GITHUB_PR_MERGE_BASE
+}
diff --git a/.buildkite/scripts/lifecycle/post_build.sh b/.buildkite/scripts/lifecycle/post_build.sh
index 4577c1a9fcad4..35e5a6006ee24 100755
--- a/.buildkite/scripts/lifecycle/post_build.sh
+++ b/.buildkite/scripts/lifecycle/post_build.sh
@@ -8,3 +8,12 @@ export BUILD_SUCCESSFUL
 "$(dirname "${0}")/commit_status_complete.sh"
 
 node "$(dirname "${0}")/ci_stats_complete.js"
+
+if [[ "${GITHUB_PR_NUMBER:-}" ]]; then
+  DOCS_CHANGES_URL="https://kibana_$GITHUB_PR_NUMBER}.docs-preview.app.elstc.co/diff"
+  DOCS_CHANGES=$(curl --connect-timeout 10 -m 10 -sf "$DOCS_CHANGES_URL" || echo '')
+
+  if [[ "$DOCS_CHANGES" && "$DOCS_CHANGES" != "There aren't any differences!" ]]; then
+    buildkite-agent meta-data set pr_comment:docs_changes:head "* [Documentation Changes](${DOCS_CHANGES_URL})"
+  fi
+fi
diff --git a/.buildkite/scripts/packer_cache.sh b/.buildkite/scripts/packer_cache.sh
index 45d3dc439ff4d..617ea79c827b0 100755
--- a/.buildkite/scripts/packer_cache.sh
+++ b/.buildkite/scripts/packer_cache.sh
@@ -2,6 +2,7 @@
 
 set -euo pipefail
 
+source .buildkite/scripts/common/util.sh
 source .buildkite/scripts/common/env.sh
 source .buildkite/scripts/common/setup_node.sh
 
diff --git a/.buildkite/scripts/pipelines/pull_request/pipeline.js b/.buildkite/scripts/pipelines/pull_request/pipeline.js
new file mode 100644
index 0000000000000..068de9917c213
--- /dev/null
+++ b/.buildkite/scripts/pipelines/pull_request/pipeline.js
@@ -0,0 +1,84 @@
+const execSync = require('child_process').execSync;
+const fs = require('fs');
+const { areChangesSkippable, doAnyChangesMatch } = require('kibana-buildkite-library');
+
+const SKIPPABLE_PATHS = [
+  /^docs\//,
+  /^rfcs\//,
+  /^.ci\/.+\.yml$/,
+  /^.ci\/es-snapshots\//,
+  /^.ci\/pipeline-library\//,
+  /^.ci\/Jenkinsfile_[^\/]+$/,
+  /^\.github\//,
+  /\.md$/,
+  /^\.backportrc\.json$/,
+];
+
+const REQUIRED_PATHS = [
+  // this file is auto-generated and changes to it need to be validated with CI
+  /^docs\/developer\/plugin-list.asciidoc$/,
+  // don't skip CI on prs with changes to plugin readme files /i is for case-insensitive matching
+  /\/plugins\/[^\/]+\/readme\.(md|asciidoc)$/i,
+];
+
+const getPipeline = (filename, removeSteps = true) => {
+  const str = fs.readFileSync(filename).toString();
+  return removeSteps ? str.replace(/^steps:/, '') : str;
+};
+
+const uploadPipeline = (pipelineContent) => {
+  const str =
+    typeof pipelineContent === 'string' ? pipelineContent : JSON.stringify(pipelineContent);
+
+  execSync('buildkite-agent pipeline upload', {
+    input: str,
+    stdio: ['pipe', 'inherit', 'inherit'],
+  });
+};
+
+(async () => {
+  try {
+    const skippable = await areChangesSkippable(SKIPPABLE_PATHS, REQUIRED_PATHS);
+
+    if (skippable) {
+      console.log('All changes in PR are skippable. Skipping CI.');
+
+      // Since we skip everything, including post-build, we need to at least make sure the commit status gets set
+      execSync('BUILD_SUCCESSFUL=true .buildkite/scripts/lifecycle/commit_status_complete.sh', {
+        stdio: 'inherit',
+      });
+      process.exit(0);
+    }
+
+    const pipeline = [];
+
+    pipeline.push(getPipeline('.buildkite/pipelines/pull_request/base.yml', false));
+
+    if (
+      await doAnyChangesMatch([
+        /^x-pack\/plugins\/security_solution/,
+        /^x-pack\/test\/security_solution_cypress/,
+        /^x-pack\/plugins\/triggers_actions_ui\/public\/application\/sections\/action_connector_form/,
+        /^x-pack\/plugins\/triggers_actions_ui\/public\/application\/context\/actions_connectors_context\.tsx/,
+      ])
+    ) {
+      pipeline.push(getPipeline('.buildkite/pipelines/pull_request/security_solution.yml'));
+    }
+
+    // Disabled for now, these are failing/disabled in Jenkins currently as well
+    // if (
+    //   await doAnyChangesMatch([
+    //     /^x-pack\/plugins\/apm/,
+    //   ])
+    // ) {
+    //   pipeline.push(getPipeline('.buildkite/pipelines/pull_request/apm_cypress.yml'));
+    // }
+
+    pipeline.push(getPipeline('.buildkite/pipelines/pull_request/post_build.yml'));
+
+    uploadPipeline(pipeline.join('\n'));
+  } catch (ex) {
+    console.error('PR pipeline generation error', ex.message);
+    process.exit(1);
+  }
+})();
diff --git a/.buildkite/scripts/pipelines/pull_request/pipeline.sh b/.buildkite/scripts/pipelines/pull_request/pipeline.sh
new file mode 100755
index 0000000000000..02be2acdf8588
--- /dev/null
+++ b/.buildkite/scripts/pipelines/pull_request/pipeline.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -euo pipefail
+
+node .buildkite/scripts/pipelines/pull_request/pipeline.js
diff --git a/.buildkite/scripts/steps/functional/apm_cypress.sh b/.buildkite/scripts/steps/functional/apm_cypress.sh
new file mode 100755
index 0000000000000..800f22c78d14c
--- /dev/null
+++ b/.buildkite/scripts/steps/functional/apm_cypress.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+source .buildkite/scripts/steps/functional/common.sh
+
+export JOB=kibana-apm-cypress
+
+echo "--- APM Cypress Tests"
+
+cd "$XPACK_DIR"
+
+checks-reporter-with-killswitch "APM Cypress Tests" \
+  node plugins/apm/scripts/test/e2e.js
diff --git a/.buildkite/scripts/steps/functional/oss_misc.sh b/.buildkite/scripts/steps/functional/oss_misc.sh
index a57a457ca189a..48be6669f321b 100755
--- a/.buildkite/scripts/steps/functional/oss_misc.sh
+++ b/.buildkite/scripts/steps/functional/oss_misc.sh
@@ -2,9 +2,6 @@
 
 set -euo pipefail
 
-# Required, at least for kbn_sample_panel_action
-export BUILD_TS_REFS_DISABLE=false
-
 source .buildkite/scripts/steps/functional/common.sh
 
 # Required, at least for plugin_functional tests
diff --git a/.buildkite/scripts/steps/functional/security_solution.sh b/.buildkite/scripts/steps/functional/security_solution.sh
new file mode 100755
index 0000000000000..9b2bfc7207a95
--- /dev/null
+++ b/.buildkite/scripts/steps/functional/security_solution.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+source .buildkite/scripts/steps/functional/common.sh
+
+export JOB=kibana-security-solution-chrome
+
+echo "--- Security Solution tests (Chrome)"
+
+cd "$XPACK_DIR"
+
+checks-reporter-with-killswitch "Security Solution Cypress Tests (Chrome)" \
+ node scripts/functional_tests \
+   --debug --bail \
+   --kibana-install-dir "$KIBANA_BUILD_LOCATION" \
+   --config test/security_solution_cypress/cli_config.ts
diff --git a/.buildkite/scripts/steps/storybooks/build_and_upload.js b/.buildkite/scripts/steps/storybooks/build_and_upload.js
index 9d72f518837e9..f46928e1a86bf 100644
--- a/.buildkite/scripts/steps/storybooks/build_and_upload.js
+++ b/.buildkite/scripts/steps/storybooks/build_and_upload.js
@@ -90,6 +90,12 @@ const upload = () => {
       gsutil -q -m cp -r -z js,css,html,json,map,txt,svg '*' 'gs://${STORYBOOK_BUCKET}/${STORYBOOK_DIRECTORY}/${process.env.BUILDKITE_COMMIT}/'
       gsutil -h "Cache-Control:no-cache, max-age=0, no-transform" cp -z html 'index.html' 'gs://${STORYBOOK_BUCKET}/${STORYBOOK_DIRECTORY}/latest/'
     `);
+
+    if (process.env.BUILDKITE_PULL_REQUEST && process.env.BUILDKITE_PULL_REQUEST !== 'false') {
+      exec(
+        `buildkite-agent meta-data set pr_comment:storybooks:head '* [Storybooks Preview](${STORYBOOK_BASE_URL})'`
+      );
+    }
   } finally {
     process.chdir(originalDirectory);
   }
diff --git a/docs/CHANGELOG.asciidoc b/docs/CHANGELOG.asciidoc
index d1324ba0622d5..2d43198dfd28d 100644
--- a/docs/CHANGELOG.asciidoc
+++ b/docs/CHANGELOG.asciidoc
@@ -65,12 +65,6 @@ Review important information about the {kib} 7.14.x releases.
 
 Review the following information about the 7.14.2 release.
 
-[float]
-[[known-issue-v7.14.2]]
-=== Known issue
-
-{kib} is unable to restore *Discover* search sessions with a relative time range. When you restore the *Discover* search session, then run a new search, {kib} displays a `Your search session is still running` message. For more information, refer to {kibana-issue}101430[#101430].
-
 [float]
 [[breaking-changes-v7.14.2]]
 === Breaking changes
diff --git a/packages/kbn-test/src/failed_tests_reporter/report_failure.test.ts b/packages/kbn-test/src/failed_tests_reporter/report_failure.test.ts
index b2cc8d6d8ffb6..b2fd3de6bbbbc 100644
--- a/packages/kbn-test/src/failed_tests_reporter/report_failure.test.ts
+++ b/packages/kbn-test/src/failed_tests_reporter/report_failure.test.ts
@@ -26,7 +26,8 @@ describe('createFailureIssue()', () => {
         time: '2018-01-01T01:00:00Z',
         likelyIrrelevant: false,
       },
-      api
+      api,
+      'main'
     );
 
     expect(api.createIssue).toMatchInlineSnapshot(`
@@ -40,7 +41,7 @@ describe('createFailureIssue()', () => {
       this is the failure text
       \`\`\`
 
-      First failure: [CI Build](https://build-url)
+      First failure: [CI Build - main](https://build-url)
 
       <!-- kibanaCiData = {\\"failed-test\\":{\\"test.class\\":\\"some.classname\\",\\"test.name\\":\\"test name\\",\\"test.failCount\\":1}} -->",
             Array [
@@ -74,7 +75,8 @@ describe('updateFailureIssue()', () => {
           <!-- kibanaCiData = {"failed-test":{"test.failCount":10}} -->"
         `,
       },
-      api
+      api,
+      'main'
     );
 
     expect(api.editIssueBodyAndEnsureOpen).toMatchInlineSnapshot(`
@@ -100,7 +102,7 @@ describe('updateFailureIssue()', () => {
         "calls": Array [
           Array [
             1234,
-            "New failure: [CI Build](https://build-url)",
+            "New failure: [CI Build - main](https://build-url)",
           ],
         ],
         "results": Array [
diff --git a/packages/kbn-test/src/failed_tests_reporter/report_failure.ts b/packages/kbn-test/src/failed_tests_reporter/report_failure.ts
index c881bc39abf61..c44fae560156a 100644
--- a/packages/kbn-test/src/failed_tests_reporter/report_failure.ts
+++ b/packages/kbn-test/src/failed_tests_reporter/report_failure.ts
@@ -10,7 +10,12 @@ import { TestFailure } from './get_failures';
 import { GithubIssueMini, GithubApi } from './github_api';
 import { getIssueMetadata, updateIssueMetadata } from './issue_metadata';
 
-export async function createFailureIssue(buildUrl: string, failure: TestFailure, api: GithubApi) {
+export async function createFailureIssue(
+  buildUrl: string,
+  failure: TestFailure,
+  api: GithubApi,
+  branch: string
+) {
   const title = `Failing test: ${failure.classname} - ${failure.name}`;
 
   const body = updateIssueMetadata(
@@ -21,7 +26,7 @@ export async function createFailureIssue(buildUrl: string, failure: TestFailure,
       failure.failure,
       '```',
       '',
-      `First failure: [CI Build](${buildUrl})`,
+      `First failure: [CI Build - ${branch}](${buildUrl})`,
     ].join('\n'),
     {
       'test.class': failure.classname,
@@ -33,7 +38,12 @@ export async function createFailureIssue(buildUrl: string, failure: TestFailure,
   return await api.createIssue(title, body, ['failed-test']);
 }
 
-export async function updateFailureIssue(buildUrl: string, issue: GithubIssueMini, api: GithubApi) {
+export async function updateFailureIssue(
+  buildUrl: string,
+  issue: GithubIssueMini,
+  api: GithubApi,
+  branch: string
+) {
   // Increment failCount
   const newCount = getIssueMetadata(issue.body, 'test.failCount', 0) + 1;
   const newBody = updateIssueMetadata(issue.body, {
@@ -41,7 +51,7 @@ export async function updateFailureIssue(buildUrl: string, issue: GithubIssueMin
   });
 
   await api.editIssueBodyAndEnsureOpen(issue.number, newBody);
-  await api.addIssueComment(issue.number, `New failure: [CI Build](${buildUrl})`);
+  await api.addIssueComment(issue.number, `New failure: [CI Build - ${branch}](${buildUrl})`);
 
   return newCount;
 }
diff --git a/packages/kbn-test/src/failed_tests_reporter/report_failures_to_file.ts b/packages/kbn-test/src/failed_tests_reporter/report_failures_to_file.ts
index aca2e6838faec..f075f6ef0b75b 100644
--- a/packages/kbn-test/src/failed_tests_reporter/report_failures_to_file.ts
+++ b/packages/kbn-test/src/failed_tests_reporter/report_failures_to_file.ts
@@ -76,6 +76,12 @@ export function reportFailuresToFile(log: ToolingLog, failures: TestFailure[]) {
       .flat()
       .join('\n');
 
+    // Buildkite steps that use `parallelism` need a numerical suffix added to identify them
+    // We should also increment the number by one, since it's 0-based
+    const jobNumberSuffix = process.env.BUILDKITE_PARALLEL_JOB
+      ? ` #${parseInt(process.env.BUILDKITE_PARALLEL_JOB, 10) + 1}`
+      : '';
+
     const failureJSON = JSON.stringify(
       {
         ...failure,
@@ -84,9 +90,7 @@ export function reportFailuresToFile(log: ToolingLog, failures: TestFailure[]) {
         jobId: process.env.BUILDKITE_JOB_ID || '',
         url: process.env.BUILDKITE_BUILD_URL || '',
         jobName: process.env.BUILDKITE_LABEL
-          ? `${process.env.BUILDKITE_LABEL}${
-              process.env.BUILDKITE_PARALLEL_JOB ? ` #${process.env.BUILDKITE_PARALLEL_JOB}` : ''
-            }`
+          ? `${process.env.BUILDKITE_LABEL}${jobNumberSuffix}`
           : '',
       },
       null,
diff --git a/packages/kbn-test/src/failed_tests_reporter/run_failed_tests_reporter_cli.ts b/packages/kbn-test/src/failed_tests_reporter/run_failed_tests_reporter_cli.ts
index 6c88b7408b628..31cd43eae4141 100644
--- a/packages/kbn-test/src/failed_tests_reporter/run_failed_tests_reporter_cli.ts
+++ b/packages/kbn-test/src/failed_tests_reporter/run_failed_tests_reporter_cli.ts
@@ -37,8 +37,8 @@ export function runFailedTestsReporterCli() {
         );
       }
 
+      let branch: string = '';
       if (updateGithub) {
-        let branch: string = '';
         let isPr = false;
 
         if (process.env.BUILDKITE === 'true') {
@@ -139,7 +139,12 @@ export function runFailedTestsReporterCli() {
           }
 
           if (existingIssue) {
-            const newFailureCount = await updateFailureIssue(buildUrl, existingIssue, githubApi);
+            const newFailureCount = await updateFailureIssue(
+              buildUrl,
+              existingIssue,
+              githubApi,
+              branch
+            );
             const url = existingIssue.html_url;
             pushMessage(`Test has failed ${newFailureCount - 1} times on tracked branches: ${url}`);
             if (updateGithub) {
@@ -148,7 +153,7 @@ export function runFailedTestsReporterCli() {
             continue;
           }
 
-          const newIssue = await createFailureIssue(buildUrl, failure, githubApi);
+          const newIssue = await createFailureIssue(buildUrl, failure, githubApi, branch);
           pushMessage('Test has not failed recently on tracked branches');
           if (updateGithub) {
             pushMessage(`Created new issue: ${newIssue.html_url}`);
diff --git a/x-pack/plugins/canvas/public/components/positionable/positionable.scss b/x-pack/plugins/canvas/public/components/positionable/positionable.scss
index d1d927672e052..6dd0d713a0308 100644
--- a/x-pack/plugins/canvas/public/components/positionable/positionable.scss
+++ b/x-pack/plugins/canvas/public/components/positionable/positionable.scss
@@ -1,4 +1,3 @@
 .canvasPositionable {
   transform-origin: center center; /* the default, only for clarity */
-  transform-style: preserve-3d;
 }