IDE bug 1.6.1 menu items disapear

The IDE has problems, on redrawing itself, when moving mouse over menu items, or sub menu items it disapears :

see image here : https://www.dropbox.com/s/aai6k2978l8qq19/ArduinoIDE%20bug.jpg?dl=0

https://www.dropbox.com/s/aai6k2978l8qq19/ArduinoIDE%20bug.jpg?dl=0

I'm on an Asus system with dual graphic cards, it doens matter if i let it run under under internal or nvdia graphic card.

any fix known, its the only program with these kind of problems (and i use lots of lots of lots of programs on my developer box).

This has been fixed with 1.6.3