The Beam Emitter does not use local space, and you cannot check “Use Local Space“ in Required module.
Found in 4.19 CL# 4033788, 4.20 Preview 5 CL# 4173640, 4.21 CL# 4199311
The particle system rotates around a center. All particles should rotate with the particle component, but they stay where they where emitted, and you cannot check “Use Local Space“ in the Required module.
You should be able to check “Use Local Space” and all particles’ locations should be relative to the particle system component.
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-61695 in the post.