Hello.
1) login as user
2) navigate to group
3) upload few photos to group's timeline (story album)
4) login as Superuser
5) navigate to backend > easysocial > users
6) delete user
Result: Seems user and all his photos are deleted, but...
Navigate to group's "story album" and you will see that this album still contain photo's thumbs (that should be deleted before).
Thanks.