Seems to be a bug with Logic which I have submitted to Apple. If you draw automation or record it, the UI is not updated properly on playback. I tried this with the GainPlugin example, the slider updates now and again, but not continuously
Do you see the same in non-JUCE AUv2s?
yes i’ve seen it in steinberg vst3-auwrapper plugins and iPlug AUs too. The issue is not there on intel or with rosetta
It might be related to the fact AU is being sandboxed?
Did you try with REAPER or other hosts as native AU?