I ran into a problem where Teams was stuck loading. On the few times I could get it to load, it would display an error page telling me to “Try Again” and to try “signing out”, neither of the links would do anything.
I was able to fix it by running:
pkill teams && rm -rf ~/.config/Microsoft/Microsoft\ Teams/Application\ Cache/Cache/*
Teams is kind of a disappointment on Linux. I have to use it, so hopefully that helps someone ( or me again in the future).