UI Scaling Issues - Normal on Test Server

Lately I got an Issue when playing EVE on my second Monitor. It spontaniously didnt scale the Window Size correctly, the Window Size on the test server DOES scale correctly however, as before. Also the Scaling Options are very limited and are not able to compensate for the size difference.

I’ll add Screenshots to show the difference, no Settings were changed before the issue took place.

How it should be: 2000x1059 (Test Server)

How it is: