What gameplay feature is this bug affecting?
Unsorted Lion Page/Sorting Lions

What's the issue? Please include any error messages you receive and as much detail as possible.
My main page says I have four lions in my unsorted den, but when I click the unsorted tab they are Ghost Lions haunting me, as there are no lions there.

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
https://www.lioden.com/territory.php

https://www.lioden.com/unsorted.php?id=9555

Any screenshots you can provide us with?
https://i.gyazo.com/dcf0a07001c579827c12f43ca1572005.png

https://i.gyazo.com/ee404ee83e2282a30aec2d73f773aefb.png

Please provide us with step by step explanation how this bug happened so we can attempt to replicate it. If it's complex, please include screenshots where possible:
I was releasing/sorting unsorted lions. Went back to my main den page after sorting a young lion and clicked 'unsorted lions'. Bam, Ghost Lions.