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Product Version: NetBeans IDE Dev (Build 200801220000) Java: 1.6.0_04; Java HotSpot(TM) Client VM 10.0-b19 System: Windows XP version 5.1 running on x86; Cp1251; ru_RU (nb) I'm bit confused with design and purpose of Delete Preview checkboxes. 1. Last leaf of preview contains checkbox. This checkbox is enabled but it's impossible to make it uncheck. I believe unused checkboxes should be grayed or something like this. 2. After making others checkboxes unchecked whole tree branch under unchecked node collapses. It's possible to expand it back using [+] button unless top node unchecked. In last case whole tree became hides somewhere so in addition it looks like we are no longer want to delete anything. But we press Do Refactor and deletion do all work. Check screenshots for illustration.
Created attachment 55380 [details] screenshot
Created attachment 55381 [details] screenshot
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss