diff --git a/src/zen/tabs/zen-essentials-promo.css b/src/zen/tabs/zen-essentials-promo.css
index 627e4214d..a11da3baf 100644
--- a/src/zen/tabs/zen-essentials-promo.css
+++ b/src/zen/tabs/zen-essentials-promo.css
@@ -22,7 +22,7 @@ zen-essentials-promo {
     outline: 1px dashed currentColor;
   }
 
-  :root:not([zen-sidebar-expanded="true"]) & {
+  :root:is(:not([zen-sidebar-expanded="true"]), [zen-unsynced-window="true"]) & {
     display: none !important;
   }