Issue #1216776 by illmasterc, dawehner, Niklas Fiekas: Fixed Two nested contextual links regions are active, when the outer region is hovered.

core/modules/contextual/contextual.base.css

@@ -13,8 +13,7 @@
   display: none;
 }
 .contextual-region:hover .contextual,
-.contextual-region:hover .trigger,
-.contextual-active .trigger,
+.contextual-region:hover .contextual-links-trigger-active,
 .contextual-active .contextual-links {
   display: block;
 }

core/modules/contextual/contextual.js

@@ -30,6 +30,10 @@ Drupal.behaviors.contextualLinks = {
       );
       // Hide the contextual links when user clicks a link or rolls out of the .contextual-region.
       $region.bind('mouseleave click', Drupal.contextualLinks.mouseleave);
+      $region.hover(
+        function() { $trigger.addClass('contextual-links-trigger-active'); },
+        function() { $trigger.removeClass('contextual-links-trigger-active'); }
+      );
       // Prepend the trigger.
       $wrapper.prepend($trigger);
     });