Hi, I’ve encountered weird problem with light in my project.
All levels in project are loaded by streaming with usage of level instancing.
In few levels static light looks different in editor and packaded project.
More interesting thing is that in package game light difference is random.
I’m having the exact same problem and it’s driving me insane. A level by itself looks good, when I add it into a parent level(that is ALL empty), for some reason, when I hit play it looks different!
Found workaround for this problem. I’ve changed lights from static to stationary and disassemble casting dynamic shadows.
Lights are bit heavier than static, but at list everything looks like I want.
After testing in your particular test build I was able to determine that the issue was related to how your room was rotated (in particular room 4). There may be other factors that could be causing the issue but I don’t think this is an issue with the engine. If you still believe that it is a bug with the engine, I will need steps on how to reproduce the issue in a blank project with minimal assets needed for the issue.
I went ahead and created a bug report for the developers to review. I’m not entirely sure this is a bug, but this will ensure this issue is at least looked at. You can find the report here: Unreal Engine Issues and Bug Tracker (UE-37222)