Hey ,
I have tested the Editor out on Windows 8.1 and I was not able to verify the context menu duplicating or ghosting. Ghosting would happen typically on computers with low refresh rate monitors. However, since you’re on a laptop, I doubt that’s the issue.
Either way, I have not been able to reproduce this at all, neither has anyone on my team. The developers have also been unable to reproduce this issue with the editor.
At this time, UE-17196 has been marked as cannot reproduce. If you’re able to conclude a way that could cause this to happen each time and anyone here at Epic can reproduce it as well, I’d be more than happy to pass that information along.
Have a great day!