F11 Fullscreen doesn't work

after pressing F11 the game flashes twice and minimize to tray, clicking on it to restore the window just leave it minimized
The only way to get the game window back is to press F11 just immediately after clicking on the minimized icon or to adjust the options.txt
It is impossible to play the game in full screen!
The bug is (now) also in earlier versions (1.7.10) - perhaps from an updated java library?