About animations

I am working on a horse riding system, when I attach the player to horse mesh and possess the horse.
The problem is that when a new player joins the game, the anim bluepirnt of previous player doesn’t replicate any more and the overlap of character capsule and horse capsule causes that the horse animation doesn’t play correctly)when I detach from horse and attach again, it will work just fine. So what’s the problem? Can anyone tell me how to fix the animation problem?

I fixed it, need to create a multicast event in the character blueprint, reset the collision of the capsules and meshes, then get all the characters in game mode, then loop over those characters and call this multicast event

It’s different, I’ve solved it because the collision of capsules and meshes is not replicated to the new client, I said in the comments how to solve it. thanks