Cache objects in Utils.__cache instead of using $.data (#4346)

CHANGELOG.md

@@ -13,6 +13,7 @@
 - User-defined types not normalized properly when passed in as data (#4632)
 - Perform deep merge for `Defaults.set()` (#4364)
 - Fix "the results could not be loaded" displaying during AJAX request (#4356)
+- Cache objects in `Utils.__cache` instead of using `$.data` (#4346)
 - Removing the double event binding registration of `selection:update` (#4306)
 
 #### Accessibility

src/js/select2/utils.js

@@ -272,10 +272,9 @@ define([
     $element.append($nodes);
   };
 
-  // Cache objects in Utils.__cache instead of $.data
+  // Cache objects in Utils.__cache instead of $.data (see #4346)
   Utils.__cache = {};
 
-
   var id = 0;
   Utils.GetUniqueElementId = function (element) {
     // Get a unique element Id. If element has no id, 
@@ -308,7 +307,6 @@ define([
     Utils.__cache[id][name] = value;
   };
 
-
   Utils.GetData = function (element, name) {
     // Retrieves a value from the cache by its key (name)
     // name is optional. If no name specified, return