diff --git a/browser/themes/shared/tabbrowser/fullscreen-and-pointerlock.css b/browser/themes/shared/tabbrowser/fullscreen-and-pointerlock.css
index 787e3153e2e07b383445e94aa9e25177eb49c929..a017e4c003f6c3b9af7c226c637b37aea6baa7e5 100644
--- a/browser/themes/shared/tabbrowser/fullscreen-and-pointerlock.css
+++ b/browser/themes/shared/tabbrowser/fullscreen-and-pointerlock.css
@@ -7,7 +7,7 @@
 :root[inDOMFullscreen] #sidebar-box,
 :root[inDOMFullscreen] #sidebar-main,
 :root[inDOMFullscreen] #sidebar-splitter,
-:root[inFullscreen]:not([macOSNativeFullscreen]) toolbar:not([fullscreentoolbar=true]),
+:root[inFullscreen]:not([macOSNativeFullscreen]) toolbar:not([fullscreentoolbar=true]):not(.zen-dont-hide-on-fullscreen),
 :root[inFullscreen] .global-notificationbox {
   visibility: collapse;
 }
