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Product Version: NetBeans IDE Dev (Build 201603230001) Java: 1.8.0_73; Java HotSpot(TM) 64-Bit Server VM 25.73-b02 Runtime: Java(TM) SE Runtime Environment 1.8.0_73-b02 Steps to reproduce: Select any version controlled modified file and invoke VCS diff. Switch to textual tab. Try to scroll diff with mouse wheel - it is not work. Same if select diff for 2 different files. In 8.1 IDE version textual diff works ok.
Caused by the same issue as bug 257503 *** This bug has been marked as a duplicate of bug 257503 ***