I had thought collision messages were sent out on their own, not as parameters on a cursor message.
Have you been discussing the branch by Chris or the main 0.8.21 version?
There is a collision message sent out on its own, and that is when a cursor has a collision with a trigger object. This is not a cursor OSC message, rather, it is a trigger OSC message. I don’t know about any other “collisions” in 0.8.21.