diff --git a/build/media_source/templates/administrator/atum/js/template.es6.js b/build/media_source/templates/administrator/atum/js/template.es6.js
index fe1266dba6a43..2e97ef31fc0b8 100644
--- a/build/media_source/templates/administrator/atum/js/template.es6.js
+++ b/build/media_source/templates/administrator/atum/js/template.es6.js
@@ -286,3 +286,20 @@ window.addEventListener('joomla:menu-toggle', (event) => {
     changeLogo(event.detail);
   }
 });
+
+/**
+ * Close any open data-bs-toggle="collapse" when opening a data-bs-toggle="dropdown"
+ *
+ * @since 4.4
+ */
+document.querySelectorAll('[data-bs-toggle="dropdown"]').forEach((button) => {
+  button.addEventListener('click', () => {
+    document.querySelectorAll('[data-bs-toggle="collapse"]').forEach((cb) => {
+      const target = document.querySelector(cb.getAttribute('data-bs-target'));
+      const collapseMenu = bootstrap.Collapse.getInstance(target) || new bootstrap.Collapse(target, {
+        toggle: false,
+      });
+      collapseMenu.hide();
+    });
+  });
+});
diff --git a/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss b/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss
index ece7792b12ba3..34271e4aa36ce 100644
--- a/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss
+++ b/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss
@@ -204,6 +204,10 @@
     .fas {
       font-size: 1.5rem;
     }
+
+    > * {
+      pointer-events: none;
+    }
   }
 
   .container-search {
diff --git a/build/media_source/templates/site/cassiopeia/scss/blocks/_toolbar.scss b/build/media_source/templates/site/cassiopeia/scss/blocks/_toolbar.scss
index 9ce695bdda44c..d9ca1c7652498 100644
--- a/build/media_source/templates/site/cassiopeia/scss/blocks/_toolbar.scss
+++ b/build/media_source/templates/site/cassiopeia/scss/blocks/_toolbar.scss
@@ -119,6 +119,10 @@
     &.btn {
       padding-inline-end: 0;
     }
+
+    > * {
+      pointer-events: none;
+    }
   }
 
   .btn-group:not(:last-child) > .dropdown-toggle-split {