I've had the app crash 3 times today while a working on 8000 x 6463 canvas
Did a hand gesture (on accident) that brought up the quick shortcut menu. App froze. I waited 30 seconds, not touching the ipad to see if it will unfreeze as often it succeeds. Instead, crashed to homescreen. Stability remains compromised with this app when working on anything larger than 4k (6k has some stuttering now and again as well that sometimes results in a crash).
iPad Pro 12.9" 3rd gen
iOS 14.4