Translucent parts of a static mesh is still visible after setting to invisible and Hidden Shadow.
Working as expected in 4.20 CL# 4369336, and 4753647
Found in 4.22 CL# 4660361 and 4.23 CL# 5762792
Results:
The translucent parts of the mesh will be visible
Expected:
The shadow would appear for the mesh but not any part of the mesh
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-72404 in the post.