Just to clarify: The previous reviewer speaks the truth. I, too, got my game "glitched" in a way that:
- Touching flags woould NOT pass the stage (except level 1)
- I was able to draw in the "No draw zone"
- God knows what else
Tested on Firefox AND Chrome, both normally update (and flash).
What causes the bug? Apparently it is the LEVEL EDITOR. Something about it will "corrupt" the game code in a way that results in that strange behavior (technically "NOT" a game breaking bug
as it won't crash/freeze the game, only prevents advancement).
The way to fix that, if you are doing a medal run, is simple: Erase your browser stuff from the last hour (unless you spent more than an hour in-game lol) and give it a shot.
It's working fine for me now.