Colision not detected with client

So I imported a mesh from Blender and I added a box simplified collision. Every setting is the default. It works as intended, it blocks the player so it won’t get through the mesh.

I use a sphere trace by Chanel to detect a collision with the actor the use the mesh I imported (collision on the actor is set to block all), the sphere detects the collision in single-player no problem.

in listen server condition, both the server and client works great, collision will be detected.

Although, in a dedicated server situation, no client detects any collision with the same actor. If I change the mesh, the collision will be detected.