I am running macOS Big Sur version 11.4. I've had this issue since last week. XD is updated too to version 126.96.36.199.
Crashes seem to happen randomly, when opening multiple files, zooming in and out, when moving a layer or saving a file. Loading icon shows up on the screen and then everything freezes. I have to actually click Force quit to stop the application. If actively wanting to work on a project XD lasts no longer than 10 minutes before it cdoes this.
I keep send reports button after the crash but never heard back from anyone.