Instances Created From Merge Actor Have Corrupt Lightmaps.
Working as intended in 4.20 CL# 4369336 and 4.21 CL# 4753647
Found in 4.22 CL# 6574378 and 4.23 CL# 6842436
This is a regression.
Results:
When loading the map the lightmap for the instances meshes will load incorrectly
Expected:
No issues with the light map
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-75802 in the post.