Hi @2526. Thanks for taking the time to report this.
User scripts, gadgets and templates are local features and managed on wiki. Phabricator/Maniphest is used for MediaWiki, MediaWiki extensions, or server configuration. You could contact the author of the script/gadget or maybe ask for help on the English Wikipedia Technical Village Pump with a clearer description of the actual problem and steps to reproduce.
Closing as INVALID here in Phabricator as this is a matter to discuss and fix on the local wiki and unfortunately not handled in Phabricator/Maniphest.