The latest duplicates with this bug were reported on unity-2d 4.8. So, Florian is probably correct in saying that the fix for bug 850320 (which was released with 4.10) fixed this as well.
The latest duplicates with this bug were reported on unity-2d 4.8. So, Florian is probably correct in saying that the fix for bug 850320 (which was released with 4.10) fixed this as well.