When someone’s timed out in a group chat, they get perm-banned instead of being timed out or purged. The issue seems to have only popped up recently, but I’m not sure when exactly it started. A couple of people have reported the same issues on other group chats too, so it doesn’t sound like an isolated issue.
My reports show this has been broken since somewhere between 7am and 2pm August 5 UTC
This forum is for third party developer support. If there is a site issue, I would recommend filing a report on https://help.twitch.tv.
Thanks,
Dallas