ACP2E-4060: Date Attribute in custom Attribute Group Fails to Show Datepicker in Admin

Author: thiaramus

lib/web/mage/calendar.js

@@ -104,9 +104,9 @@ define([
 
         _overwriteFindPos: function () {
             $.datepicker.constructor.prototype._findPos = function (obj) {
-                let domPosition = obj.getBoundingClientRect();
+                var position = $(obj).offset();
 
-                return [domPosition.left, domPosition.top];
+                return [position.left, position.top];
             };
         },