It also happens with the demo plugin. It’s an M1 Arm system.
Logic runs as an Apple Arm process:
Edit: The problem happens very consistent on my system when you move the window fast. For slow movements the window stays responsive most of the time.
Edit: I could also reproduce the dead area problem at the bottom of the plugin:
Plugin scaling is also not smooth. Looks like the UI size is jumping around while resizing:
Tahoe 26.1
Logic 11.2.2
JUCE 8.0.10 and earlier
Apple M1 ARM native ARM
Edit: The user reported that the window “freeze” problem does not happen in intel Rosetta mode and Resizing is much smoother.