Unlit Mode almost near White!?

Development Rendering
1

After i Updated to UE 4.19.1 (latest Hotfix) and also Updated the Soul City Project Files that works in 4.19 …
When i Open the Soul City Project and change to Unlit Mode the 3d View looks almost White (Textures to Bright)!???
This happens also with Soul Cave Project !?
In 4.18 the Unlit Mode Looks OK for this Projects!
here is a Screenshot:

Is this a Bug?
How i can solve this…?
Please help

Thanks

2

We are having the same problem on our project.

Scene and lighting looked fine, attempted a lighting build, froze at ‘compiling geometry 100%’. When we booted the map back up the whole scene looks the same as above.