diff --git a/userChrome.css b/userChrome.css
index fe47776..12a60a3 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -1260,14 +1260,8 @@
     display: none;
   }
 
-  .tab-icon-image, .tab-sharing-icon-overlay {
-    box-sizing: content-box;
-    padding: 3px 0;
-
-    border-bottom: 2px solid var(--identity-icon-color);
-  }
-
-  .tabbrowser-tab:not([pinned]) .tab-content::before {
+  .tabbrowser-tab:not([pinned]) .tab-content::before,
+  .tabbrowser-tab[pinned][busy] .tab-content::before {
     /* Box Model */
     content: '';
     display: block;
@@ -1293,6 +1287,11 @@
     border-bottom: 2px solid var(--identity-icon-color);
   }
 
+  /* Pinned Tab - Busy */
+  .tabbrowser-tab[pinned][busy] .tab-content::before {
+    width: 16px;
+  }
+
   /* Pinned Tab - Titlechanged Indicator override */
   .tabbrowser-tab:is([image], [pinned]) > .tab-stack > .tab-content[attention]:not([selected="true"]) .tab-icon-image,
   .tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) .tab-icon-image {