So found my first bug on the AR OS.
If editing the non volume velocity mapping on a drum voice and I try to change it to anything other than filter cut-off (the default) it glitches the screen and I have to back out using the “no” key. Sometimes this will crash the entire machine and leave it with a frozen screen and none of the buttons or knobs responding.
Not a big thing as I don’t need the feature desperately right now but hopefully fixed in the first maintenance update.