Unfortunately I can't seem to replicate the issue at all. The detection area / variables that allow jumping are not mutated by anything in the game that is outside of that room. What OS / Browser are you using if I may ask? And just to absolutely confirm, you went inside the circle, pressed the spacebar and nothing happened? The counter remained at 10 too I presume?
I'll check your game out now, and I'll have to explore this in more detail I think!