With material layers enabled, selecting two sided foliage will cause the engine to crash. This is working as expected in 4.20 CL# 4369336.
Found in 4.21 CL# 4541578 and 4.22 CL# 4573698
This is a regression.
Foliage would be selected
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-66775 in the post.