I just had a very frustrating session of Gloomhaven. I've been working hard to get roll20 to work for this card-based game and overall the experience is not awful. Tonight, however, I had three players with myself acting as GM/coordinator. We are all playing as GMs since there are so many limitations on how a player can interact with the tabletop. No issue there. However, I was testing out my skills with advanced keyboard shortcuts and using the 'f f' to draw shapes on the board. These were meant to be temporary so after sketching about I'd choose "Clear drawings". This literally cleared all the sketches, but also all the text we had placed around, as well as all the cards drawn from decks! Not great for a card game. It took us most of the session to figure out why our setup was "randomly" disappearing. How do others sketch on the map? Ctrl-z only undoes one action and doesn't seem to have a history beyond that one.