select2-full.js in select2-rails-4.0.11

- old
+ new

@@ -1,7 +1,7 @@
 /*!
- * Select2 4.0.10
+ * Select2 4.0.11
  * https://select2.github.io
  *
  * Released under the MIT license
  * https://github.com/select2/select2/blob/master/LICENSE.md
  */
@@ -4491,10 +4491,17 @@
     // that is determining the offset
     if ($offsetParent.css('position') === 'static') {
       $offsetParent = $offsetParent.offsetParent();
     }
 
-    var parentOffset = $offsetParent.offset();
+    var parentOffset = {
+      top: 0,
+      left: 0
+    };
+
+    if ($.contains(document.body, $offsetParent[0])) {
+      parentOffset = $offsetParent.offset();
+    }
 
     css.top -= parentOffset.top;
     css.left -= parentOffset.left;
 
     if (!isCurrentlyAbove && !isCurrentlyBelow) {