Level unwantedly fades to black?

Unsure what section to put this in.

When I play one of my levels (Level_05) in the viewport, it fades to black within a couple of seconds. Strange but it doesn’t seem to do it in my mobile preview. All my other levels seem fine. I can also still see the UMG Widgets just not the level.

Since it works in mobile preview it’s more of an inconvenience than anything else.

Any ideas?

Thanks,

What code/blueprints do you have that could affect that? Post screenshots up here.