💄 Fix sidebar tabs for mozilla theme

Author: trickypr

src/browser/themes/pulse/sidebar_tabs.css

@@ -18,7 +18,7 @@
   background-color: -moz-Dialog;
   overflow: hidden;
 
-  max-width: var(--tab-min-height);
+  max-width: calc(var(--tab-min-height) + var(--tab-block-margin) * 2);
 
   /* Makes the sidebar slide out from below */
   position: relative;