What gameplay feature is this bug affecting?
Unsorted cave

What's the issue? Please include any error messages you receive and as much detail as possible.
On the overview to my den the unsorted section claims to contain 6 lions despite only contaioning 3- an ncl lioness and her 2 nursing cubs. When checking the falcon's eye, an additional 3 cubs are listed in the dropdown menu for this cave, but otherwise the cubs cannot be found

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
Unsorted cave

Any screenshots you can provide us with?

Top left: Unsorted button showing inaccurate population
Bottom left: Contents of the unsorted cave with 3 visible lions.
Right: Falcon's eye dropdown featuring 3 more cubs than expected

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:
Unsure. Presumably a mother lioness ran away at some point, although my runners list does not contain any bred lions currently.