Are you running any crazy extensions? Perhaps you should try the site without any browser extensions installed, just to rule it out.

I will check your account myself later on, and see if I get the problem. On my own account, the thing works fine, but that doesn't mean much

Nope. No extensions, add-ons, or anything crazy that might screw my account up. Maybe I'm just cursed  

i use Google chrome that never happens to me my mouse jumps around though 

The bug has been isolated and rectified now, thanks to Kuzachika