What gameplay feature is this bug affecting?
Breeding

What's the issue? Please include any error messages you receive and as much detail as possible.
Another expensive breeding potentially down the drain with these newfangled items.

Lioness doesnt show up in dropdown for ochre powder because she has a gnawrock.

Doesn't do this when its applied to your king.

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/lion.php?id=794210162802

Link to her cave so you can see where she should be in the list in screenshots. https://www.lioden.com/cave.php?id=2897

Any screenshots you can provide us with?
https://sta.sh/27nb7gu0pmp

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:
Apply gnawrock to lioness.
Attempt to apply ochre powder to lioness.