Main menu missing on OSX Mavericks DP 6

After upgrading to OSX Mavericks DP 6 IntelliJ menus are missing: there's the Apple menu and 'IntelliJ IDEA' menu which does not open (can highlight only); all other menus are missing. Eclipse has a similar issue -- the menus are there, but all options are grayed out so it looks like it's a java-related issue affecting all apps. All other UI elements are there and working in both apps, toolbars work fine etc.

Any workarounds? There are no Java updates and I can't google up anything.