Typing in large amounts of data kills the app, requiring a re-install!
I recently tried to paste a large(ish) amount of json data to a co-worker. after pasting this into the "type a message" window. The app complained about the size of the data. But also froze. So I couldn't delete the data. Restarting the app (multiple times) resulted in the same un-responsive app where I could neither delete the data or continue to use Teams. In the end I had to re-install as the only fix.
This is so bad it's funny. Having recently moved form Slack to Teams (due to the fact that the IT director decided that Teams was cheaper) Teams is a much, much more inferior product. I won't be rushing back.