When I patrol edits where someone redirects an article (it’s always redirects!), and click patrol, it sometimes doesn’t move onto the next edit. The edit history screens disappears for a bit (like what normally happens when moving onto the next edit) but the same edit appears again. Hope this isn’t too vague! I have had this problem for some time now, but it usually fixed itself if I exited the tool or if I kept pressing patrol.

It’s probably not an internet issue, as I multitask and have used other tools/websites with no problem. 

Have you tried patrolling the edit in “old school” RC patrol - https://www.wikihow.com/Special:RecentChanges ?

I know sometimes RC patrol can just get funky and get stuck on an edit, although sometimes you can patrol it outside of Special:RCPatrol by finding the edit from “old school” RC patrol and marking it as patrolled there. 

I have not tried the traditional way before, but now I have! Thanks; it solved the problem. I forgot about manual patrolling.