It happens to me on multiple computers as well as to colleagues of mine, that MS-Teams shows just an empty screen when you click on an image to enlarge it.
If you try to enlarge a picture it often happens that it will not show anything.
The result is an empty screen, even after a couple minutes nothing shows up.
I have already tried to delete all files in "%appdata%\Microsoft\teams", but it did not help and as I wrote it happens on a lot of computers and users.
It looks to me as if this problem is present since 2019.
Why Microsoft is not able or willing to fix it?
https://answers.microsoft.com/en-us/msteams/forum/all/pictures-wont-enlarge-in-microsoft-teams/a982386f-2178-4866-ab3e-85e44f2fd165
Edit 1:
If I open Teams in the webbrowser, then the problem does not show up.