Hello Leonid, you're right, I performed the maneuver again, it works fine if owner who acts. However yesterday I had a concrete case, and I was able to reproduce it today, after I pulled out the motié of the hair, I understood.
In fact, this problem occurs only if it is ADMIN that changes the visibility of the photo, which I did yesterday for my specific case, I deduced a general problem, it is an error on my part c is only admin.
So, please, do the same test with admin like this:

1. 

2.

3. 

Can you confirm that it also works like this at home?