fe.settings:getUserBoardSettings - non array given[operate] - Endchan Magrathea
 >>/12135/
Yes, it would not work in Greasemonkey because of its security model... For some reason they don't allow access to page's jQuery instance.
https://stackoverflow.com/questions/28136866/jquery-in-a-greasemonkey-script-click-event-is-not-firing-in-firefox
https://stackoverflow.com/questions/24719256/error-permission-denied-to-access-property-handler
It works with Tampermonkey.
I'm happy your developers found it useful.