Issue of"Deleted Actor" remaining in Scene outliner still persists in 4.7

Development World Creation
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7

I am Destroy()-ing actors and I have same issue, my actors are attached initially to others, I detach them and destroy them, plenty of (Deleted Actor) entries remain in Outliner even if I force call garbage collector like GEditor->GetEditorWorldContext().World()->ForceGarbageCollection(true);
Happens in UE 4.13.0!

Screenshot of World Outliner