Right click editor/Slate windows blackout after a while of repeatedly clicking them.

Licensee video of the issue here - [Link Removed] 

This can be worked around with this setting:  [Link Removed]

However it is not a solution as this setting actually causes other programs, e.g. slack, to artefact and there is a noticeable slowdown with various window launches.

Another strange thing to note is that this is only visible on the monitor, a screenshot actually picks up the correct window, the blackout is an overlay only visible on a monitor (occurs in 4.27 and in 5.0.3):

[Image Removed]

This is kind of non-deterministic but repro steps:

1.Open ShooterGame

2.Open level blueprint

3.Right click across the graph page to repeatedly open a new context window over and over, varying the speed.

4.Eventually the window will blackout and will not return no matter how many times you right click again.