diff --git a/css/leptonChrome.css b/css/leptonChrome.css
index 0c20df2..b0799b1 100644
--- a/css/leptonChrome.css
+++ b/css/leptonChrome.css
@@ -314,8 +314,8 @@
   }
   /*= Windows - Classic Theme #734 =============================================*/
   /*= MacOS Fullscreen clipping #1045 ==========================================*/
-  :root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #navigator-toolbox {
-    border-top: 16px solid transparent;
+  :root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #TabsToolbar {
+    min-height: var(--tab-min-height, fit-content) !important;
   }
 }
 /*= Others - Compatibility ===================================================*/
@@ -14390,8 +14390,8 @@
   }
 }
 @media (-moz-bool-pref: "userChrome.compatibility.os") {
-  :root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #navigator-toolbox {
-    border-top: 16px solid transparent;
+  :root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #TabsToolbar {
+    min-height: var(--tab-min-height, fit-content) !important;
   }
 }
 /*= Others - Compatibility ===================================================*/
diff --git a/css/leptonChromeESR.css b/css/leptonChromeESR.css
index 6448c33..a5e6c9c 100644
--- a/css/leptonChromeESR.css
+++ b/css/leptonChromeESR.css
@@ -495,8 +495,8 @@
     }
   }
   /*= MacOS Fullscreen clipping #1045 ==========================================*/
-  :root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #navigator-toolbox {
-    border-top: 16px solid transparent;
+  :root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #TabsToolbar {
+    min-height: var(--tab-min-height, fit-content) !important;
   }
 }
 /*= Others - Compatibility ===================================================*/
diff --git a/src/compatibility/_os.scss b/src/compatibility/_os.scss
index 412e03b..41bb194 100644
--- a/src/compatibility/_os.scss
+++ b/src/compatibility/_os.scss
@@ -289,6 +289,6 @@ $_os_linuxDefaultShadow: 0 0 4px rgba(128, 128, 142, 0.5);
 }
 
 /*= MacOS Fullscreen clipping #1045 ==========================================*/
-:root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #navigator-toolbox {
-  border-top: 16px solid transparent;
-}
\ No newline at end of file
+:root[sizemode="fullscreen"][macOSNativeFullscreen]:not([inDOMFullscreen="true"]) #TabsToolbar {
+  min-height: var(--tab-min-height, fit-content) !important;
+}