diff --git a/src/components/menu-item/menu-item.e2e.ts b/src/components/menu-item/menu-item.e2e.ts
index 522199b173b..753d087ba65 100644
--- a/src/components/menu-item/menu-item.e2e.ts
+++ b/src/components/menu-item/menu-item.e2e.ts
@@ -46,65 +46,4 @@ describe("calcite-menu-item", () => {
   });
 
   it("is focusable", () => focusable("calcite-menu-item"));
-
-  describe("mouse support", () => {
-    it("should open the submenu on click", async () => {
-      const page = await newE2EPage();
-      await page.setContent(html`<calcite-menu>
-        <calcite-menu-item id="ArcGISOnline" text="ArcGISOnline">
-          <calcite-menu-item id="ArcGISJS" text="ArcGISJS" slot="menu-item-dropdown">
-            <calcite-menu-item text="API" id="API" slot="menu-item-dropdown"></calcite-menu-item>
-            <calcite-menu-item text="Widgets" id="Widgets" slot="menu-item-dropdown"> </calcite-menu-item>
-          </calcite-menu-item>
-          <calcite-menu-item text="Calcite" id="Calcite" slot="menu-item-dropdown"> </calcite-menu-item>
-        </calcite-menu-item>
-      </calcite-menu>`);
-
-      const menuItem = await page.find("calcite-menu-item[id='ArcGISOnline']");
-      const menuItemMenu = await page.find("calcite-menu-item[id='ArcGISOnline'] >>> calcite-menu");
-
-      expect(await menuItemMenu.isVisible()).toBe(false);
-
-      await menuItem.click();
-      await page.waitForChanges();
-      expect(await menuItemMenu.isVisible()).toBe(true);
-      expect(await page.evaluate(() => document.activeElement.id)).toBe("ArcGISOnline");
-
-      const subMenuItem = await page.find("calcite-menu-item[text='ArcGISJS']");
-      const subMenuItemMenu = await page.find("calcite-menu-item[text='ArcGISJS'] >>> calcite-menu");
-      expect(await subMenuItemMenu.isVisible()).toBe(false);
-      await subMenuItem.click();
-      await page.waitForChanges();
-      expect(await subMenuItemMenu.isVisible()).toBe(true);
-      expect(await page.evaluate(() => document.activeElement.id)).toBe("ArcGISJS");
-    });
-
-    it("should close any opened submenu when clicked outside", async () => {
-      const page = await newE2EPage();
-      await page.setContent(html`<calcite-menu>
-        <calcite-menu-item id="ArcGISOnline" text="ArcGISOnline">
-          <calcite-menu-item text="ArcGISJS" slot="menu-item-dropdown"> </calcite-menu-item>
-          <calcite-menu-item text="Calcite" slot="menu-item-dropdown"> </calcite-menu-item>
-        </calcite-menu-item>
-      </calcite-menu>`);
-
-      const menuItem = await page.find("calcite-menu-item[id='ArcGISOnline']");
-      const menuItemMenu = await page.find("calcite-menu-item[id='ArcGISOnline'] >>> calcite-menu");
-
-      expect(await menuItemMenu.isVisible()).toBe(false);
-
-      await menuItem.click();
-      await page.waitForChanges();
-      expect(await menuItemMenu.isVisible()).toBe(true);
-      expect(await page.evaluate(() => document.activeElement.id)).toBe("ArcGISOnline");
-
-      const menuElement = await page.$("calcite-menu");
-      const { x, y, width, height } = await menuElement.boundingBox();
-
-      await page.mouse.click(x + width + 50, y + height + 50);
-      await page.waitForChanges();
-      expect(await menuItemMenu.isVisible()).toBe(false);
-      expect(await page.evaluate(() => document.activeElement.id)).not.toBe("ArcGISOnline");
-    });
-  });
 });
diff --git a/src/components/menu/menu.e2e.ts b/src/components/menu/menu.e2e.ts
index 11a480756cb..77ddd101f21 100755
--- a/src/components/menu/menu.e2e.ts
+++ b/src/components/menu/menu.e2e.ts
@@ -1,3 +1,5 @@
+import { newE2EPage } from "@stencil/core/testing";
+import { html } from "../../../support/formatting";
 import { accessible, hidden, renders } from "../../tests/commonTests";
 
 describe("calcite-menu", () => {
@@ -6,4 +8,217 @@ describe("calcite-menu", () => {
   it("honors hidden attribute", async () => hidden("calcite-menu"));
 
   it("is accessible", () => accessible("calcite-menu"));
+
+  describe("mouse support", () => {
+    it("should open the submenu on click", async () => {
+      const page = await newE2EPage();
+      await page.setContent(html`<calcite-menu>
+        <calcite-menu-item id="ArcGISOnline" text="ArcGISOnline">
+          <calcite-menu-item id="ArcGISJS" text="ArcGISJS" slot="menu-item-dropdown">
+            <calcite-menu-item text="API" id="API" slot="menu-item-dropdown"></calcite-menu-item>
+            <calcite-menu-item text="Widgets" id="Widgets" slot="menu-item-dropdown"> </calcite-menu-item>
+          </calcite-menu-item>
+          <calcite-menu-item text="Calcite" id="Calcite" slot="menu-item-dropdown"> </calcite-menu-item>
+        </calcite-menu-item>
+      </calcite-menu>`);
+
+      const menuItem = await page.find("calcite-menu-item[id='ArcGISOnline']");
+      const menuItemMenu = await page.find("calcite-menu-item[id='ArcGISOnline'] >>> calcite-menu");
+
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await menuItem.click();
+      await page.waitForChanges();
+      expect(await menuItemMenu.isVisible()).toBe(true);
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("ArcGISOnline");
+
+      const subMenuItem = await page.find("calcite-menu-item[text='ArcGISJS']");
+      const subMenuItemMenu = await page.find("calcite-menu-item[text='ArcGISJS'] >>> calcite-menu");
+      expect(await subMenuItemMenu.isVisible()).toBe(false);
+      await subMenuItem.click();
+      await page.waitForChanges();
+      expect(await subMenuItemMenu.isVisible()).toBe(true);
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("ArcGISJS");
+    });
+
+    it("should close any opened submenu when clicked outside", async () => {
+      const page = await newE2EPage();
+      await page.setContent(html`<calcite-menu>
+        <calcite-menu-item id="ArcGISOnline" text="ArcGISOnline">
+          <calcite-menu-item text="ArcGISJS" slot="menu-item-dropdown"> </calcite-menu-item>
+          <calcite-menu-item text="Calcite" slot="menu-item-dropdown"> </calcite-menu-item>
+        </calcite-menu-item>
+      </calcite-menu>`);
+
+      const menuItem = await page.find("calcite-menu-item[id='ArcGISOnline']");
+      const menuItemMenu = await page.find("calcite-menu-item[id='ArcGISOnline'] >>> calcite-menu");
+
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await menuItem.click();
+      await page.waitForChanges();
+      expect(await menuItemMenu.isVisible()).toBe(true);
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("ArcGISOnline");
+
+      const menuElement = await page.$("calcite-menu");
+      const { x, y, width, height } = await menuElement.boundingBox();
+
+      await page.mouse.click(x + width + 50, y + height + 50);
+      await page.waitForChanges();
+      expect(await menuItemMenu.isVisible()).toBe(false);
+      expect(await page.evaluate(() => document.activeElement.id)).not.toBe("ArcGISOnline");
+    });
+  });
+
+  describe("keyboard support", () => {
+    it("should open and close horizontal calcite-menu", async () => {
+      const page = await newE2EPage();
+      await page.setContent(html`<calcite-menu>
+        <calcite-menu-item id="Nature" text="Nature" href="#arcgisonline">
+          <calcite-menu-item id="Mountains" text="Mountains" slot="menu-item-dropdown">
+            <calcite-menu-item
+              text="Rocky Mountains"
+              id="Rocky Mountains"
+              slot="menu-item-dropdown"
+            ></calcite-menu-item>
+            <calcite-menu-item text="Smoky Mountains" id="Smoky Mountains" slot="menu-item-dropdown">
+            </calcite-menu-item>
+          </calcite-menu-item>
+          <calcite-menu-item text="Rivers" id="Rivers" slot="menu-item-dropdown"> </calcite-menu-item>
+        </calcite-menu-item>
+        <calcite-menu-item id="Planets" text="Planets"> </calcite-menu-item>
+      </calcite-menu>`);
+
+      const menuItemMenu = await page.find("calcite-menu-item[id='Nature'] >>> calcite-menu");
+      const subMenuItemMenu = await page.find("calcite-menu-item[id='Mountains'] >>> calcite-menu");
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await page.keyboard.press("Tab");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+
+      await page.keyboard.press("Enter");
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await page.keyboard.press("Tab");
+      await page.keyboard.press("Enter");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+      await page.waitForChanges();
+      expect(await menuItemMenu.isVisible()).toBe(true);
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Mountains");
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rivers");
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rivers");
+
+      await page.keyboard.press("ArrowUp");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Mountains");
+
+      expect(await subMenuItemMenu.isVisible()).toBe(false);
+      await page.keyboard.press("Enter");
+      expect(await subMenuItemMenu.isVisible()).toBe(true);
+
+      await page.keyboard.press("ArrowRight");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rocky Mountains");
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Smoky Mountains");
+
+      await page.keyboard.press("ArrowUp");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rocky Mountains");
+
+      await page.keyboard.press("ArrowLeft");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Mountains");
+      expect(await subMenuItemMenu.isVisible()).toBe(false);
+      expect(await menuItemMenu.isVisible()).toBe(true);
+
+      await page.keyboard.press("ArrowLeft");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await page.keyboard.press("ArrowRight");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Planets");
+
+      await page.keyboard.press("ArrowLeft");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+    });
+
+    it("should open and close vertical calcite-menu", async () => {
+      const page = await newE2EPage();
+      await page.setContent(html`<calcite-menu layout="vertical">
+        <calcite-menu-item id="Nature" text="Nature" href="#arcgisonline">
+          <calcite-menu-item id="Mountains" text="Mountains" slot="menu-item-dropdown">
+            <calcite-menu-item
+              text="Rocky Mountains"
+              id="Rocky Mountains"
+              slot="menu-item-dropdown"
+            ></calcite-menu-item>
+            <calcite-menu-item text="Smoky Mountains" id="Smoky Mountains" slot="menu-item-dropdown">
+            </calcite-menu-item>
+          </calcite-menu-item>
+          <calcite-menu-item text="Rivers" id="Rivers" slot="menu-item-dropdown"> </calcite-menu-item>
+        </calcite-menu-item>
+        <calcite-menu-item id="Planets" text="Planets"> </calcite-menu-item>
+      </calcite-menu>`);
+
+      const menuItemMenu = await page.find("calcite-menu-item[id='Nature'] >>> calcite-menu");
+      const subMenuItemMenu = await page.find("calcite-menu-item[id='Mountains'] >>> calcite-menu");
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await page.keyboard.press("Tab");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+
+      await page.keyboard.press("Enter");
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await page.keyboard.press("Tab");
+      await page.keyboard.press("Enter");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+      await page.waitForChanges();
+      expect(await menuItemMenu.isVisible()).toBe(true);
+
+      await page.keyboard.press("ArrowRight");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Mountains");
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rivers");
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rivers");
+
+      await page.keyboard.press("ArrowUp");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Mountains");
+
+      expect(await subMenuItemMenu.isVisible()).toBe(false);
+      await page.keyboard.press("Enter");
+      expect(await subMenuItemMenu.isVisible()).toBe(true);
+
+      await page.keyboard.press("ArrowRight");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rocky Mountains");
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Smoky Mountains");
+
+      await page.keyboard.press("ArrowUp");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Rocky Mountains");
+
+      await page.keyboard.press("ArrowLeft");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Mountains");
+      expect(await subMenuItemMenu.isVisible()).toBe(false);
+      expect(await menuItemMenu.isVisible()).toBe(true);
+
+      await page.keyboard.press("ArrowLeft");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+      expect(await menuItemMenu.isVisible()).toBe(false);
+
+      await page.keyboard.press("ArrowDown");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Planets");
+
+      await page.keyboard.press("ArrowUp");
+      expect(await page.evaluate(() => document.activeElement.id)).toBe("Nature");
+    });
+  });
 });
diff --git a/src/components/menu/menu.stories.ts b/src/components/menu/menu.stories.ts
index 317133daf05..781176fb5b9 100644
--- a/src/components/menu/menu.stories.ts
+++ b/src/components/menu/menu.stories.ts
@@ -37,3 +37,33 @@ export const withNesting = (): string => html`<calcite-panel>
     </calcite-menu-item>
     <calcite-menu-item text="Example nav item 4" text-enabled></calcite-menu-item> </calcite-menu
 ></calcite-panel>`;
+
+export const WithSubMenuOpen_TestOnly = (): string => html`<calcite-nav
+  ><calcite-menu slot="primary-content-center">
+    <calcite-menu-item
+      text="My nav item"
+      href="#mynav"
+    /> 
+    <calcite-menu-item
+      text="item1"
+      active
+    > 
+    </calcite-menu-item>
+    </calcite-menu-item>
+    </calcite-menu
+></calcite-nav>`;
+
+export const WithSubMenuOpenInVerticalLayout_TestOnly = (): string => html`<calcite-nav
+  ><calcite-menu slot="primary-content-center" layout="vertical">
+    <calcite-menu-item
+      text="My nav item"
+      href="#mynav"
+    /> 
+    <calcite-menu-item
+      text="item1"
+      active
+    > 
+    </calcite-menu-item>
+    </calcite-menu-item>
+    </calcite-menu
+></calcite-nav>`;
diff --git a/src/components/menu/menu.tsx b/src/components/menu/menu.tsx
index 6f6da55ff72..a9b8c67fbab 100644
--- a/src/components/menu/menu.tsx
+++ b/src/components/menu/menu.tsx
@@ -115,6 +115,7 @@ export class CalciteMenu {
     const parentEl = el.parentElement as HTMLCalciteMenuItemElement;
     if (parentEl) {
       focusElement(parentEl);
+      parentEl.open = false;
     }
   };