App from example: https://apps.apple.com/us/app/minimoog-model-d-synthesizer/id1339418001

This still seems to be an issue in iOS 16.1 beta 2. This beta has removed the task menu but the "Nothing to Undo" alert is still showing after a three finger tap.

Same. I'm only seeing the issue on macOS builds. I contacted Apple Developer Support and others should probably do the same.