What are the exact steps you take
before seeing this occur?
- Run “Epic Games Luncher”.
- Open Project from “Libraries” / Lunch Unreal Engine (4.8.3) → New Project (doesn’t really matter).
Additionally, are you on a two monitor
system or a single monitor?
Tested in both situations.
Are you just opening a project then
right click to open a submenu and at
that point it duplicates?
Yes, when mouse is over submenus parent it duplicates.