Merge pull request z-song#5318 from gzldx/master

修复多选框显示问题

Author: jxlwqq

src/Form/Field/Select.php

@@ -294,7 +294,7 @@ protected function loadRemoteOptions($url, $parameters = [], $options = [])
       var value = $(element).data('value') + '';
       if (value) {
         value = value.split(',');
-        $(element).select2('val', value);
+        $(element).val(value).trigger("change");
       }
   });
 });