Comment 2 for bug 2025948

Interesting, the buttons are slightly cut off in my testing on macOS, but not as much in your screenshot, and I don't have the title bar issue.

Would you mind testing the latest beta installer for Pinta 2.2 from https://github.com/PintaProject/Pinta/actions/runs/5450200796 (requires GitHub login to download)
With Pinta 2.2 being ported to GTK4 this may be already fixed (for me, the buttons are laid out much better)