I used to use PaintBBS exclusively with no problems, but this time the beizer didn't work and when I erased it wouldn't show until I zoomed in or out or switched to/from float. It was driving me crazy!
Lascaux usually effs up my input and so i get really weird angles instead of curves. Chibi usually crashes. Shi leaves lines when I scroll but those can be made to go away by switching tabs on my browser or undoing something. PaintBBS used to have nothing...it makes me so sad that it's glitching so bad for me now. ;^;