diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index b428fe9b0989..7e343ce6f1a6 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -2107,7 +2107,7 @@ pref("sidebar.visibility", "always-show");
 // as a backup to restore the sidebar UI state when a user has PPB mode on
 // or has history cleared on browser close.
 pref("sidebar.backupState", "{}");
-pref("sidebar.expandOnHover", false);
+pref("sidebar.expandOnHover", true);
 pref("sidebar.old-sidebar.has-used", false);
 pref("sidebar.new-sidebar.has-used", false);
 
diff --git a/browser/components/sidebar/sidebar-customize.css b/browser/components/sidebar/sidebar-customize.css
index 66ccbc38c7dd..e037457cde05 100644
--- a/browser/components/sidebar/sidebar-customize.css
+++ b/browser/components/sidebar/sidebar-customize.css
@@ -14,14 +14,6 @@
   }
 }
 
-.setting-message {
-  /* Pull the message-bar over the input box's border */
-  margin-block-end: calc(-1 * var(--sidebar-box-border-width));
-  margin-inline: calc(-1 * var(--space-medium) - var(--sidebar-box-border-width));
-  /* Remove the top radius, match the bottom radius to the input box's radius */
-  --message-bar-border-radius: 0 0 var(--border-radius-medium) var(--border-radius-medium);
-}
-
 .medium-top-margin {
   margin-block-start: var(--space-medium);
 }
diff --git a/browser/components/sidebar/sidebar-customize.mjs b/browser/components/sidebar/sidebar-customize.mjs
index 92f200f314aa..2685afa64604 100644
--- a/browser/components/sidebar/sidebar-customize.mjs
+++ b/browser/components/sidebar/sidebar-customize.mjs
@@ -22,8 +22,6 @@ const VISIBILITY_SETTING_PREF = "sidebar.visibility";
 const EXPAND_ON_HOVER_PREF = "sidebar.expandOnHover";
 const POSITION_SETTING_PREF = "sidebar.position_start";
 const TAB_DIRECTION_SETTING_PREF = "sidebar.verticalTabs";
-const EXPAND_ON_HOVER_MESSAGE_DISMISSED_PREF =
-  "sidebar.expandOnHoverMessage.dismissed";
 
 export class SidebarCustomize extends SidebarPage {
   constructor() {
@@ -251,26 +249,6 @@ export class SidebarCustomize extends SidebarPage {
     </div>`;
   }
 
-  expandOnHoverMessageTemplate() {
-    if (
-      !Services.prefs.getBoolPref(EXPAND_ON_HOVER_MESSAGE_DISMISSED_PREF, false)
-    ) {
-      return html`
-        <moz-message-bar
-          class="setting-message expand-on-hover-message"
-          data-l10n-id="expand-on-hover-message"
-          @message-bar:user-dismissed=${this.onExpandOnHoverMessageDismissed}
-          dismissable
-        ></moz-message-bar>
-      `;
-    }
-    return "";
-  }
-
-  onExpandOnHoverMessageDismissed() {
-    Services.prefs.setBoolPref(EXPAND_ON_HOVER_MESSAGE_DISMISSED_PREF, true);
-  }
-
   render() {
     let extensions = this.getWindow().SidebarController.getExtensions();
     return html`
@@ -322,7 +300,6 @@ export class SidebarCustomize extends SidebarPage {
             `
           )}
           </moz-checkbox>
-          ${this.expandOnHoverMessageTemplate()}
         </moz-fieldset>
         <moz-fieldset class="customize-group medium-top-margin no-label">
           <moz-checkbox
diff --git a/browser/components/sidebar/tests/browser/browser_customize_sidebar.js b/browser/components/sidebar/tests/browser/browser_customize_sidebar.js
index e68419116abb..d21b9f262b78 100644
--- a/browser/components/sidebar/tests/browser/browser_customize_sidebar.js
+++ b/browser/components/sidebar/tests/browser/browser_customize_sidebar.js
@@ -362,42 +362,3 @@ add_task(async function test_settings_synchronized_across_windows() {
   SidebarController.hide();
   await BrowserTestUtils.closeWindow(newWindow);
 });
-
-add_task(async function test_expand_on_hover_message() {
-  await SpecialPowers.pushPrefEnv({
-    set: [["sidebar.expandOnHoverMessage.dismissed", false]],
-  });
-  let win = await BrowserTestUtils.openNewBrowserWindow();
-  let panel = await showCustomizePanel(win);
-  let expandOnHoverMessage = panel.shadowRoot.querySelector(
-    ".expand-on-hover-message"
-  );
-
-  ok(expandOnHoverMessage, "Found the expand on hover message");
-  ok(expandOnHoverMessage.isConnected, "Message bar is connected");
-
-  let messageBarRemoved = BrowserTestUtils.waitForEvent(
-    expandOnHoverMessage,
-    "message-bar:close"
-  );
-  ok(expandOnHoverMessage.closeButton, "close button exists");
-  EventUtils.synthesizeMouseAtCenter(
-    expandOnHoverMessage.closeButton,
-    {},
-    win.SidebarController.browser.contentWindow
-  );
-  await messageBarRemoved;
-  ok(!expandOnHoverMessage.isConnected, "Message bar was removed");
-
-  // Close the window, make a new one to check that the message is not shown
-  await BrowserTestUtils.closeWindow(win);
-  win = await BrowserTestUtils.openNewBrowserWindow();
-  panel = await showCustomizePanel(win);
-  expandOnHoverMessage = panel.shadowRoot.querySelector(
-    ".expand-on-hover-message"
-  );
-
-  ok(!expandOnHoverMessage, "Expand on hover message is not shown");
-
-  await BrowserTestUtils.closeWindow(win);
-});
diff --git a/browser/locales/en-US/browser/sidebar.ftl b/browser/locales/en-US/browser/sidebar.ftl
index 2bbc832074c1..6541ad9021af 100644
--- a/browser/locales/en-US/browser/sidebar.ftl
+++ b/browser/locales/en-US/browser/sidebar.ftl
@@ -65,9 +65,6 @@ sidebar-show-on-the-left =
 # hovers over it.
 expand-sidebar-on-hover =
   .label = Expand sidebar on hover
-expand-on-hover-message =
-  .heading = Expand on hover coming soon
-  .message = In a future update, you’ll be able to expand the sidebar on hover.
 
 ## Labels for sidebar context menu items