Ilya Bukshteyn can I please ask if Microsoft has an issues register or RAID log for Teams\MTR that is available to the public to view? I ask this because it took me a while identify what the issue was with my devices. I raised a case with Microsoft initially thinking it may be related to another issue and Microsoft emailed me asking for more details on Thursday 4:30PM AEDT, I replied to that email at 7:30PM AEDT advising that it may be related to an update and provided the link to this forum, I haven't had an update since then.
I'm very lucky that our MTR are on a new floor with people only starting to move in but it would have been a bad couple of days for those that have their MTR's widely used. At a business level it doesn't inspire confidence when you spend significant money on equipment and communicate to staff the benefits of MTR only for it to be unusable 1 week later from a windows update.
If there was a publicly accessible issues register then it would be great tool for support in identifying issues. This might already exist, I'm just not aware of one.