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Product Version = NetBeans IDE 8.0 (Build 201403101706) Operating System = Mac OS X version 10.9.2 running on x86_64 Java; VM; Vendor = 1.8.0 Runtime = Java HotSpot(TM) 64-Bit Server VM 25.0-b70 On my mac when i press the top-right button to expand the ide full screen (on my secondary large screen), it expands correctly then it stretch a bit leaving an empty black strip on top of the same height of the apple menu.
Created attachment 146493 [details] IDE log
Created attachment 146494 [details] Screenshot
Reporter, is the bug reproducible on your primary screen as well? Can you reproduce with a plain Java Swing app?
Please provide the info required in comment #3 and reopen, thanks.