8chan features script
Not sure if that will help you but I checked the console and I get this error: TypeError: fcxs.init is not a function
Fixed issue where script would break if installed fresh, let me know if this resolves it for you.
Nope, still the same issue.
Ok, so apparently that's a Greasemonkey issue. It works on the recommended Violentmonkey. I just didn't think there would be much of a difference between them and I used Greasemonkey for years without issues. Sorry for the trouble.
Doesn't work for me at all. All it does is put "Fullchan-X Settings [Close]" with "Settings updated, refresh page to apply" to the bottom of the thread and a button to reload the page. Probably the same thing the other user mentioned with the @run-at fix, but that doesn't work for me.