Foliage lightmaps will not match properly to the lighting when using a lighting scenario. They will look normal if you select the Foliage tool but in PIE they will still be incorrect.
Working as expected in 4.19 CL# 4033788
Found in 4.20 CL# 4369336 and 4.22 CL# 4413632
The foliage placed in the editor will have incorrect lightmaps
The lightmaps would match correctly with the lighting scenario
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-64707 in the post.