Black flicker when stoping the loading screen

[EeroVarendi]

Hey, so every time the loading screen is removed, there is a black flicker for a frame or two. (even on Package build)
This happens even with the allowEngineTick = true (and in the Default, not Startup loading screens). It also happens no matter what time i stop the loading screen (manually a few seconds after world has loaded or immediately when loading is done). And also if i have movies or only background images (the latter is what i want, i dont actually even need movies).

Im guessing its the MoviePlayer itself being removed and the rendering being suspended during it. But even when i load and activate a full screen widget underneath the LoadingScreen and then Stop the Loadingscreen, the flicker still happens :/

Do you maybe have any ideas on how to get rid of this behavior?