OS Windows 10

Intended and outcome

Intended Pressing "Mark all as read" or "Mark selected as read" (after selecting threads) would cause them to be flagged as "read" and the counter in the left sidebar would disappear

Actual The counter does not disappear and the threads do not disappear from the thread list

Ok, something is going wrong. Marking as read (both methods) should work. Though marking as read isn't supposed to make the thread disappear from the threads list -- unsubscribing is what does that. So that part isn't a bug. Can try to perform this action again in Ripcord and tell me if you see any errors in the event log?

Partially solved when working with the user. It seems to be related to out-of-date or broken state on the server side for some credentials. I'll need to investigate again in the future. Solved by re-authenticating the account.