Issue #2559955 by Wim Leers, swentel, mdrummond: Ensure that Quick Edit relies...

Issue #2559955 by Wim Leers, swentel, mdrummond: Ensure that Quick Edit relies less on the structure of the HTML

core/modules/editor/js/editor.formattedTextEditor.js

@@ -63,7 +63,7 @@
 
       // Store the actual value of this field. We'll need this to restore the
       // original value when the user discards his modifications.
-      var $fieldItems = this.$el.find('.field__item');
+      var $fieldItems = this.$el.find('.quickedit-field');
       if ($fieldItems.length) {
         this.$textElement = $fieldItems.eq(0);
       }

core/modules/quickedit/js/editors/plainTextEditor.js

@@ -31,7 +31,7 @@
       // Store the original value of this field. Necessary for reverting
       // changes.
       var $textElement;
-      var $fieldItems = this.$el.find('.field__item');
+      var $fieldItems = this.$el.find('.quickedit-field');
       if ($fieldItems.length) {
         $textElement = this.$textElement = $fieldItems.eq(0);
       }