In a static lighting environment, moving static objects no longer marks the built lighting as invalid.
This prevents the on-screen warning from appearing.
Regression introduced in CL: 25964466 on //UE5/Main
1. Download the Licensee's test project and open (see addl info URL)
2. Open the map "/Game/Levels/TestingRebuildLightsPrompt".
3. Disable dynamic lighting in project settings:
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-222843 in the post.