Sorry to hear about you running into the jank, we spent a lot of time trying to fix most of it, but yeah some of the collisions into walls just was too much for the timeframe
As for getting stuck without gauge, we kind of try to show it in level 2, but if you run out of "energy" you can still keep drawing, it will simply get rid of parts of your oldest lines. So you should never get stuck because of that at least
Thanks for playing!