If you go into moderation option.

Then enter an album >

Thumbnails seem to dissapear and also > (I think this is due to attempting the following BUT it would seem that the picture is moved into a recycle bin eg -1 automatically)

if you edit a picture....

firslty the album dropdown list will be empty

And if you change the Title (as a test) and then save & exit the following error appears>

An error has occurred. Error: is currently unavailable.