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1. Put caret into any method name 2. From main menu: refactor > change method parameters 3. In "Change method Parameters" press Add 4. Put caret into "Name" textbox and by backspace delete all chars (char by char) >> whenever last char is deleted textbox is locked and it is impossible to tyke any text in it Product Version: NetBeans IDE Dev (Build 201310290001) Java: 1.7.0_45; Java HotSpot(TM) 64-Bit Server VM 24.45-b08 Runtime: Java(TM) SE Runtime Environment 1.7.0_45-b18 System: Windows 7 version 6.1 running on amd64; Cp1252; en_US (nb)
IMPORTANT: after deleting last char press backspace again, in the opposite case error doesn't occurs.
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