Almost all my Rack ensembles are driven by MIDI sequencers, using the module MIDI-CV as an interface between the MIDI Sequencer and Rack.
It happens that this module occasionally stays with the Gate always on, and I must right-click to enter the context menu, and select Panic for the module to reset.
It doesn’t seem to be on the sequencer side, because if I open a midi monitor or open ableton live everything is working normally.
Is this a known issue? Does it happen with anyone else?
I happened a few times to me in Reaper and FL studio with some 3rd party Vst, but never in Rack so far
Are you on Windows ?
I have both Windows and Mac and it happens on both… let me see if I can record a video while this happens
Ok finally I was able to understand what is causing this, and I can replicate it.
The situation is when a MIDI-CV module is duplicated, then I change the MIDI channel, and sometimes it occurs that the Gate stays always on.
You can see in the video that I had to try a couple of times for this to happen.
Now that I know what causes this it doesn’t annoy me anymore 
Right click on MIDI-CV’s panel and choose Panic.
Yes I am doing that already, thanks Andrew!