Hi Jansen, that’s one hell of a downside. 🙁
Something to try:
Elsewhere on this forum people succeeded in fixing similar (maybe) problems by installing WinTab drivers.
Another possibility: Try moving away (or better: renaming) the qt.conf file. You find it where your AnimationPaper.exe file is (probably in ProgramFiles/AnimationPaper). That forces Animation Paper to use Windows Ink. This is not ideal for other reasons, but perhaps it is the better choice for you.
Anyway, I have noted this. We’ll see what we can do at our end.
Thanks for letting me know! Also let me know if some of the above help you in any way.