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Created attachment 155150 [details] Screenshot of the bug We use diff view in the CND component to show the result of refactorings application, since approximately the beginning of last week the view displays a grey area instead the result of changes.
How can i try it? please provide exact steps to reproduce.
I reproduced the issue with java project, so you don't need the CND component. You can reproduce a bug by performing, say, rename refactoring and choosing "Preview" in rename dialog.
Is it just a repaint problem? Does it fix itself if you click in the right-panel or try to scroll?
Yes, looks like it is a repaint problem, because diff view comes back to normal after window's resize.
Reproduced with Dev (Build 201508020002)
Fix: http://hg.netbeans.org/core-main/rev/2cfd332a3e67
Integrated into 'main-silver', will be available in build *201508060002* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-silver/rev/2cfd332a3e67 User: Ondrej Vrabec <ovrabec@netbeans.org> Log: #254109 - Result view overlaid with a grey area