https://udn.unrealengine.com/questions/271482/oncomponentbeginoverlap-not-firing-on-server.html
Attach a trigger shape to a character's hand or something, make it animate (without moving otherwise) – overlaps will not be updated and overlap events will not fire (on the server).
This should already be working. Please verify that an animated mesh with an overlap box triggers overlap events
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-24286 in the post.