Summary
From version 3.4 to 3.6: Messages do not refresh automatically if I have the app open in a channel. I have to move to another channel and come back to see the new messages.
Steps to reproduce
Using Docker, upgraded to version 3.6 from 3.4. Mattermost is sitting behind a reverse proxy nginx. Previously everything was working.
Now, from time to time, messages do not refresh automatically, specially those posted by incoming webhooks.
The app is open for several hours at a time (if that has any bearing)
Expected behavior
Channel should show new messages and corresponding notifications
Observed behavior
Didn't see anything in the UI (maybe there is something that I can activate to show some info if connection is broken?) unless I move from one channel to another.