Hello LBH,
Thanks for responding. I am running Analog Lab 3 in Vienna Ensemble Pro as a host, much of the time. For purposes of narrowing the problem down, I have been running AL3 standalone, and have reproduced the problems there.
As I mentioned, this is happening randomly - so sometimes it happens, and sometimes not on the same patch.
I do see this issue most frequently with ProphetV patches, where release button is set (to allow contour on the release EG cycle) *and* with Sustain Mode set to Legacy (to hold gate on EG sustain cycle). I have seen this behavior on some Matrix12V patches, and other Arturia VSTis - I'll try to get more data points there.
I've attached 2 P5 patches I have made, where I see this behavior frequently. If I switch between them (without playing keyboard, without sustain pedal held), the newly loaded patch typically is latched with sustain held (any notes played will be sustained, until I tap the CC644 pedal, after which they will play properly).
Other Info,
I'm on a Mac Pro, OSX 10.13.4, Analog Lab 3 (3.2.0.1509)
I also see this behavior in the individual plug vstis when switching presets too.
This is not the same behavior that you described (with previous patch sounds sustaining after switching patches), this is the newly switched patch, that is latched sustain-on from the first key press.
Hope this helps, Thanks for listening,
Kevin L