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Product Version = NetBeans IDE 8.1 (Build 201510222201) Operating System = Mac OS X version 10.11.4 running on x86_64 Java; VM; Vendor = 1.8.0_60 Runtime = Java HotSpot(TM) 64-Bit Server VM 25.60-b23 Reproducibility: Happens every time STEPS: * In netbeans full screen mode, open preferences window * While the preferences window is opened, click on any button that is supposed to open another netbeans popup window (not OS native file browse/save). i.e. in Keymap choose Manage profiles. or in plugins, check any available unsigned plugin and try to install it. The accept certificate popup should appear after the agreement step. ACTUAL: Nothing will show, but the current window will be inactive and you can not click to reactivate, however, you can press ESC key to close the (hidden) modal popup. Sometimes you will be able to move the big modal and see the hidden modal placed behind it (z-index error). If you returned to normal screen mode (not full screen), and followed same steps again, everything will work as expected. EXPECTED: The required popup to appear on top of the current popup so it can be worked with or closed normally
The same problem already described in bug #257530. *** This bug has been marked as a duplicate of bug 257530 ***