yep, looks like a bug
In my private album I have the possiblity to delete images in the detail view (mayby other views too).
I think Admins should have the possiblity to delete other members album images too. We have spammers that leaves spam images behind, even if the user and the posts are deleted
I have one at Sporenbolog and the image turns up at top of the species list
One example here also:.
https://www.reddick.co.uk/mvc/PhotoAlbum/Member/1213?sortby=date&sortorder=desc