Yeah I know, it's an unfortunate side-effect of the input requiring spacebar as it's single button. I could add some code that would disable key events for space, but I'm not sure what effect that'd have in general.
For now, you can go to fullscreen mode and you won't see any motion.
Thanks for mentioning it, by the way.
Ouch, yes, that's true, but when we made the rules for the jam we only took into account in running fullscreen... Thanks.
Every time you see a game that is played with the space bar, you have to click the content to activate only the content and then you can press space bar with out scrolling the space, that happen also with flash content, you need to click it first