diff --git a/build/scss/_main-sidebar.scss b/build/scss/_main-sidebar.scss
index 7babbe373..7a2dd269a 100644
--- a/build/scss/_main-sidebar.scss
+++ b/build/scss/_main-sidebar.scss
@@ -1013,6 +1013,9 @@
     z-index: 9999;
     position: relative;
   }
+  .control-sidebar {
+    z-index: 9999;
+  }
 }
 
 // Sidebar Search