This rarely happens. But when it does, and u catch it within a couple strokes of ur finger, you can press the erase button and it will restore your piece. But let's hope u aren't in the middle of a serious piece because if it happens once in a session, it will continue until u save it and log out again. I've been dealing with it for years and years years on here. Just a tip brother. Sorry that happened. It's important to keep an eye on the bottom half while you are busy piecing unfortunately. Much love. **QueenJams**

Yeah U just zone out some times and get shit goes aye