I touch Theta param in the left part of it, and the sound disappears, all the numbers go mad into infinity and then become NaN. Also there's no sound if none is

I touch Theta param in the left part of it, and the sound disappears, all the numbers go mad into infinity and then become NaN. Also there's no sound if none is selected in controls, but changing anything in controls makes the same effect -- all params spiral into infinity. Not fun.