diff --git a/.github/workflows/monodocs_build.yml b/.github/workflows/monodocs_build.yml
index 7f11de452c..7585c464fe 100644
--- a/.github/workflows/monodocs_build.yml
+++ b/.github/workflows/monodocs_build.yml
@@ -1,7 +1,7 @@
 name: Monodocs Build
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
   cancel-in-progress: true
 
 on:
diff --git a/.github/workflows/pythonbuild.yml b/.github/workflows/pythonbuild.yml
index 53ab938369..8d450ffc87 100644
--- a/.github/workflows/pythonbuild.yml
+++ b/.github/workflows/pythonbuild.yml
@@ -14,7 +14,7 @@ env:
   FLYTE_SDK_LOGGING_LEVEL: 10 # debug
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
   cancel-in-progress: true
 
 jobs:
diff --git a/flytekit/core/python_auto_container.py b/flytekit/core/python_auto_container.py
index 2c4703cdd3..93d832d4e2 100644
--- a/flytekit/core/python_auto_container.py
+++ b/flytekit/core/python_auto_container.py
@@ -87,19 +87,28 @@ def __init__(
         kwargs["metadata"] = kwargs["metadata"] if "metadata" in kwargs else TaskMetadata()
         kwargs["metadata"].pod_template_name = pod_template_name
 
+        self._container_image = container_image
+        # TODO(katrogan): Implement resource overrides
+        self._resources = ResourceSpec(
+            requests=requests if requests else Resources(), limits=limits if limits else Resources()
+        )
+
+        # The serialization of the other tasks (Task -> protobuf), as well as the initialization of the current task, may occur simultaneously.
+        # We should make sure super().__init__ is being called after setting _container_image because PythonAutoContainerTask
+        # is added to the FlyteEntities in super().__init__, and the translator will iterate over
+        # FlyteEntities and call entity.container_image().
+        # Therefore, we need to ensure the _container_image attribute is set
+        # before appending the task to FlyteEntities.
+        # https://github.com/flyteorg/flytekit/blob/876877abd8d6f4f54dec2738a0ca07a12e9115b1/flytekit/tools/translator.py#L181
+
         super().__init__(
             task_type=task_type,
             name=name,
             task_config=task_config,
             security_ctx=sec_ctx,
+            environment=environment,
             **kwargs,
         )
-        self._container_image = container_image
-        # TODO(katrogan): Implement resource overrides
-        self._resources = ResourceSpec(
-            requests=requests if requests else Resources(), limits=limits if limits else Resources()
-        )
-        self._environment = environment or {}
 
         compilation_state = FlyteContextManager.current_context().compilation_state
         if compilation_state and compilation_state.task_resolver: