Thanks for reporting. I’ve added a fix for this issue on the juce7 branch:
I think the root cause of the issue is the same as for the issue discussed here:
We avoided making this change previously because we were worried about potential breakage in other hosts. However, now we know that two popular hosts are broken with the current behaviour, there’s a stronger case for making the suggested change. The documentation for kAudioUnitProperty_ClassInfo (used to set the state of the AU) suggests that the host itself should be responsible for fetching any changed parameter values after a new state is loaded. That is, if this change does cause issues for any hosts, I think that this would indicate a problem with the host, rather than with the plugin.
