Hi,
after weekend I updated my work TW machine, and MS Teams doesn't start
anymore... No message in console, just white square on screen and not working
tray icon... I'm on KDE if it matters... Any idea what could go on?

Same here.

Found this: https://docs.microsoft.com/en-us/answers/questions/548771/teams-fails-to-load-on-linux.html

See towards the end of the thread... several users are reporting issues again since a few days.

Cris