Windows App Rocket Chat v.3.1.1 does not save window position

Hello everyone,
for some strange reason the Rocket Chat app version 3.1.1 for Windows does not save the window position on my Windows 10 20H2 latest update.
I have a three screen setup and Rocket Chat always startsup on my main screen.
If I move the app, it freezes, becomes unresponsive and can only be dragged around with heavy lag.

Other apps don’t have such a behavior.

Do I have to delete the app entirely or what can help, this is really annoying.
The old Windows app had a similiar “feature” but at least saved the window position at one point and started up on the left screen as required.