message edits in the current channel count as unread messages

[evils]

this results in a non-zero Unread count that doesn't go away when pressing M-a (switch to next unread channel)
currently this results in me doing a back-forth with M-s M-s to clear the unread count after finding M-a ineffective

as the current channel shows a message has been edited,
it seems best to only show Unread for messages whose (edited) status isn't visible in the current view (this assumes the user notices the (edited) indicator)
alternatively, actually switch to the current channel on M-a, as it is the one that is "unread" (this would hint to the user the unread message is actually in the current channel)

i also just experienced what i believe to be the "return to the starting point" feature of M-a switching to the starting point after an edit in the current channel, resulting in the Unread count going to 0 and landing me in a channel with no new message
(though a message appeared soon after, maybe the displaying of that messaged lagged the Unread count)
(i saw Unread: 0, saw an edit arrive, saw Unread: 1, pressed M-a, got switched to my previous channel, saw no new message, saw Unread: 0, saw a new message arrive)

this is on previous release, matterhorn 50200.14.1 on nixos-unstable
i didn't see anything in the changelog for the later release indicating the behaviour around this changed
(in case it's relevant: i also have mattermost-desktop open on the same device)

[jtdaugherty]

Thanks for the report! We'll investigate.

[jasom]

I am seeing similar behavior. I haven't confirmed it's related to edited messages but M-a does not clear unread but a double M-s does.

It started happening recently without a client (or as far as I know server) upgrade. I'm also on nixos, and it happens with both 50200.17.0 and 50200.19.0

CORRECTION. This happened about the same time as our server was updated to v9.5 (specifically MM Enterprise 9.5.3) from 8.1.x