Known Issues in Modern Windows Port (.NET MAUI WinUI 3) - hyvanmielenpelit/GnollHack GitHub Wiki
1. Top 32 pixels of the game screen has a wrong cursor and does not respond to mouse clicks
This is a bug in .NET MAUI 9.0 Preview 5. Microsoft needs to fix it.
The same bug causes the top 32 pixels to disappear in the game screen, when you switch the app between different displays with Win+Shift+Left/Right.