Socket static mesh preview not appearing in persona

Hi All

I have recently updated to version UE4.7 and am unable to preview static mesh’s in sockets in persona. What I have done as a test is added a socket to the standard third person character then add one of the standard assets such as the one of the walls or rocks as a preview asset. But in the view port in the mesh dose not appear.

I don’t know if this is a bug with my installation or if I have just forgotten to re-tick a option since I installed the update but if anyone know’s what I need to do to fix this I would greatly appreciate it as I believe it is something very simple.

Cheers

same is happening with me in some assets while previewing them