I've experienced weird and disquieting behaviors of Bosendorfer Imperial for a while. It started roughly around the time of said update, I rolled back which changed nothing. At times, and I cannot discern why a situation would be any different than the other situation here, hitting a single note on the kaybd controller causes it to make a horrendous garbled noise, in degrees ranging from I should force quit everything if not hard boot, to a kind of lingering amount of corruption not very different than not having enough latency. It shouldn't be that, since nothing else is performing that way in this project.
It may do the same from input off a diff controller, but it seems worse with this Nektar 49-key inputting.
total avoidance of keybord input for a piano isn't viable here