Fixes #4975 - The sidebar area in the ticket is very wide in RTL.

app/assets/stylesheets/zammad.scss

@@ -11531,7 +11531,8 @@ output {
 
   .searchableSelect-shadow {
     position: absolute;
-    left: -9999px;
+
+    @include bidi-style(left, -9999px, right, -9999px);
   }
 
   .dropdown-menu {