MAGETWO-46847: [FF] Inline translation is unavailable for button elements

Author: omiroshnichenko

lib/web/mage/edit-trigger.js

@@ -98,11 +98,17 @@
          * @protected
          */
         _onMouseMove: function(e) {
-            var target = $(e.target);
+            var target = $(e.target),
+                inner = target.find(this.options.editSelector);
+
             target = target.is(this.trigger) || target.is(this.options.editSelector) ?
                 target :
                 target.parents(this.options.editSelector).first();
 
+            if ($(e.target).is('button') && inner.length) {
+                target = inner;
+            }
+
             if (target.size()) {
                 if (!target.is(this.trigger)) {
                     this._setPosition(target);