Alright guys, for those who have this bug, just update your graphics driver to the newest
BETA version.
I have a XFX AMD RADEON HD6870 and after updating to the newest catalyst 14.2 driver, it worked.
Unfortunately, I don\'t know if that bug occures on Nvidia graphic cards too. If so, try the same just with the Nvidia drivers. In addition to this, everybody should update to Java 7 Update 51!
Thanks to Caumen for the solution