So, I was making a halo hat for the among us game I'm helping with in snap, and since there are tools in the costume editor that chrome canvas doesn't have, I decided to use vector in the snap costume editor.
I made a mistake, and since you cannot erase in vector, I pressed undo AND IT UNDID EVERYTHING. And I assure you, it was only supposed to undo the one thing that was last done, not everything.
It made me very mad because I couldn't redo the work I had did.
Also, this doesn't really happen all the time but it happens too often.