MessageManagerLock caused crash on Ableton Live 11.3.2

[Toddler-Boy]

Is it a real crash, or does your plugin just hang? Also is this specific to VST3 or does the same happen in VST2 as well?

This might be related:

BR: Latest JUCE plugins won't scan in Cubase 12

I’ve tried to repro this (in Nuendo 12.0.50.387 on macOS 13.3.1) by doing rm ~/Library/Preferences/Nuendo\ 12/Nuendo\ VST3\ Cache\ \(arm64\)/vst3plugins.xml and running Nuendo but my plugin scanned and worked fine.