Phew... Answering for my students, that's a close race between:
- Accidentally editing while the game is running. (greying out boxes?)
- Tooltips not being translated :P
- A missing overview for rooms (like there is for drawings)
- (Small issue:) the "move" button at two exits is not the same (one is translated, the other not - one has a different tool tip, but they do the same) --> my students get confused on how to place an exit in a room not currently shown in the room-window.
- (Also small issue:) For nearly every screen I have to tell them to use their browsers to zoom out to 80 or 90% to fit one complete box and to press F11 for fullscreen. Maybe a +/- and fullscreen-button would be helpful?