Is there any chance that your midi controller is echoing received MIDI messages back out?
If yes, that might create an endless midi feedback loop, if using the simple (non JS) version of the MIDI Remote, since it seems to echo (some) incoming midi messages right back out.
Over the years, I have frozen Cubase a few times via inadvertently creating endless midi feedback loops. 
p.s. As far as I can tell, the older Generic Remote and Quick Controls don’t echo messages to the sending device, so no feedback loop there.