Hello.
I had version 4.16.2 and it worked fine.
I replaced the drive, so I reinstalled Epic Launcher and Unreal Engine versions 4.16.3, 4.17.2 and 4.18, and no version was working properly.
When I click on anything there is no reaction. Elements are highlighted and so much.
When I point the mouse over an item, a black bar is displayed instead of the back.
When in the Viewport click on an item I have to wait for a few seconds to react.
Please help.
I looked through all the similar topics and found no solution.