Reactivate keyboard shortcuts when notifications are closed

Fixes #13574
Resolves #13575

CHANGELOG.md

@@ -6,6 +6,7 @@
 - Fixed a bug where icons within secondary buttons were illegible when active.
 - Fixed a bug where the `|replace` filter was treating search strings as regular expressions even if they were invalid. ([#12956](https://github.com/craftcms/cms/issues/12956))
 - Fixed a bug where user groups without “Edit users” permission were being granted “Assign users to [group name]” when upgrading to Craft 4.
+- Fixed a bug where keyboard shortcuts weren’t getting reactivated when control panel notifications were dismissed. ([#13574](https://github.com/craftcms/cms/issues/13574))
 
 ## 4.4.17 - 2023-08-08
 

src/web/assets/cp/src/js/CP.js

@@ -1483,6 +1483,7 @@ Craft.CP.Notification = Garnish.Base.extend({
   $container: null,
   $closeBtn: null,
   originalActiveElement: null,
+  _hasUiElements: false,
 
   init: function (type, message, settings) {
     this.type = type;
@@ -1533,8 +1534,8 @@ Craft.CP.Notification = Garnish.Base.extend({
         .append(this.settings.details)
         .appendTo($main);
 
-      const $focusableElement = $detailsContainer.find('button,input');
-      if ($focusableElement.length) {
+      this._hasUiElements = !!$detailsContainer.find('button,input');
+      if (this._hasUiElements) {
         Garnish.uiLayerManager.addLayer(this.$container);
         Garnish.uiLayerManager.registerShortcut(Garnish.ESC_KEY, () => {
           this.close();
@@ -1609,6 +1610,10 @@ Craft.CP.Notification = Garnish.Base.extend({
 
     this.closing = true;
 
+    if (this._hasUiElements) {
+      Garnish.uiLayerManager.removeLayer(this.$container);
+    }
+
     if (
       this.originalActiveElement &&
       document.activeElement &&