I am also having this issue.
Sorry but Kaikairos has already stated they won't be returning to work on PNGTuberPlus.
If you're having this issue, you're better off looking to a different pngtubing application instead of looking to hacks and workarounds.
Damn thats a shame. I'm also having this issue (Win11) and the only thing that would temporarily fix it was closing the application and reopening it. I love how dynamic pngtuber+ makes my character so I kinda dont want to go back to veadomini
