Product Version = NetBeans IDE 7.3 (Build 201306052037)
Operating System = Mac OS X version 10.8.4 running on x86_64
Java; VM; Vendor = 1.7.0_25
Runtime = Java HotSpot(TM) 64-Bit Server VM 23.25-b01
When the ide is opened on a secondary screen, sub-popup menu opened navigating hints popup menu are not displayed, just a single black line is displayed instead (it seems sub-popup menu width collapsed to 0).
Created attachment 136577 [details]
I believe this is already filled as bug #228729. Thanks for the report anyway.
*** This bug has been marked as a duplicate of bug 228729 ***