--- a/browser/themes/shared/identity-block/identity-block.inc.css
+++ b/browser/themes/shared/identity-block/identity-block.inc.css
@@ -146,16 +146,17 @@
 #tracking-protection-icon:not([state]) {
   margin-inline-end: -18px;
   pointer-events: none;
   opacity: 0;
   /* Only animate the shield in, when it disappears hide it immediately. */
   transition: none;
 }
 
+#urlbar[pageproxystate="invalid"] > #identity-box > #extension-icon,
 #urlbar[pageproxystate="invalid"] > #identity-box > #tracking-protection-icon {
   visibility: collapse;
 }
 
 /* CONNECTION ICON, EXTENSION ICON */
 
 #connection-icon, #extension-icon {
   width: 16px;