I think this may have been fixed very recently with bug 1904304 - I couldn't reproduce it in my testing after enabling those changes.
Could you test it out and verify? There are some packages available from https://github.com/PintaProject/Pinta/actions/runs/363799953 (requires github login), or on Arch Linux I think there is a pinta-git package for obtaining the latest development version.
I think this may have been fixed very recently with bug 1904304 - I couldn't reproduce it in my testing after enabling those changes.
Could you test it out and verify? There are some packages available from https:/ /github. com/PintaProjec t/Pinta/ actions/ runs/363799953 (requires github login), or on Arch Linux I think there is a pinta-git package for obtaining the latest development version.