diff --git a/src/browser/themes/shared/zen-browser-shared.css b/src/browser/themes/shared/zen-browser-shared.css
index 3f147d5fd..937deb460 100644
--- a/src/browser/themes/shared/zen-browser-shared.css
+++ b/src/browser/themes/shared/zen-browser-shared.css
@@ -378,6 +378,7 @@ toolbarbutton#scrollbutton-up {
 
 .tab-icon-overlay {
   margin-inline-end: 0 !important;
+  display: none !important; /* TODO: fix this */
 }
 
 /*#tabbrowser-arrowscrollbox {