Okay, I just got a random player to confirm that it is invisible. But, looks like the solution is putting it back to the inventory and placing it in your house to make it visible again.

Now I still have the issue with the shower furniture. Does it still disappear when you try to put it back in your inventory? I lost 2 shower furniture because of it and still haven't gotten anything back as a result (that was about 4 days ago).