--- a/browser/themes/shared/tabs.inc.css
+++ b/browser/themes/shared/tabs.inc.css
@@ -93,59 +93,59 @@
      however, that currently forces main thread painting. When this is fixed
      (after WebRender lands), we can do something like
      `transition: fill 0.333s, opacity 0.333s;` */
 
   fill: currentColor;
   opacity: 0.7;
 }
 
+:root[sessionrestored] .tab-throbber[busy]:-moz-locale-dir(rtl)::before {
+  animation-name: tab-throbber-animation-rtl;
+}
+
 @keyframes tab-throbber-animation {
   100% { transform: translateX(-100%); }
 }
 
+@keyframes tab-throbber-animation-rtl {
+  100% { transform: translateX(100%); }
+}
+
 :root[sessionrestored] .tab-throbber[progress]::before {
   fill: var(--tab-loading-fill);
   opacity: 1;
 }
 
 .tab-sharing-icon-overlay,
 .tab-icon-image {
   height: 16px;
   width: 16px;
 }
 
 .tab-throbber:not([pinned]),
 .tab-sharing-icon-overlay:not([pinned]),
 .tab-icon-image:not([pinned]) {
-  margin-inline-end: -16px;
+  margin-inline-end: 6px;
 }
 
 .tab-icon-image {
   list-style-image: url("chrome://mozapps/skin/places/defaultFavicon.svg");
 }
 
 .tab-icon-image[src^="chrome://"] {
   -moz-context-properties: fill;
   fill: currentColor;
 }
 
 .tab-icon-image[sharing]:not([selected]),
 .tab-sharing-icon-overlay {
   animation: 3s linear tab-sharing-icon-pulse infinite;
 }
 
-.tab-label-container {
-  padding-inline-start: 22px;
-}
-
-.tab-icon-image:not([src]):not([busy]):not([pinned]) ~ .tab-label-container {
-  padding-inline-start: 0;
-}
-
 /* This should remain identical to identity-box-sharing-icon-pulse in identity-block.inc.css */
 @keyframes tab-sharing-icon-pulse {
   0%, 16.66%, 83.33%, 100% {
     opacity: 0;
   }
   33.33%, 66.66% {
     opacity: 1;
   }