Hello Matthew, thanks for your reply.
I copied your blueprint and kept my server attach & detach since you didn’t seem to change that. What happens when I test it is that only the server sees the object moving, so I created a blueprint from one of the cubes in the scene and set it to be replicated.
This being done, the object followed on both the server and the client, and the bug occured when the object was detached.
Can you provide some input on this? Is there something I’m doing wrong?