Mouse disapears

Im bein careful cause i think it couldnt be a bug...

So anyways every time i put a warp return point or a link point(or item location)
I also cant edit tiles
But either way the same thing happens!

the mouse will revert back a desktop mouse if i go to far down or right of the zelda quest screen, when that happens the mouse cant effect anything while in that state. AGH its such a problem

Im using windows 7 and its version 2.10.2(all the other versions dont work, although the beta works)

Please anyone able to help?