What gameplay feature is this bug affecting?
Lion transfers

What's the issue? Please include any error messages you receive and as much detail as possible.
After removing lions from hunting and unsecuring them, it takes a while for them to be added to the trade/gift listings. Eventually, they get added. I'm not sure how long the wait period is, and it's not an issue of them being in a hunting party or of me not double checking their settings (I've double checked multiple times).

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
It's been happening to random lionesses of mine (NCLs I'm putting up for trade, mostly), but currently it's happening with https://www.lioden.com/lion.php?id=794149083749
Edit: After a few hours, the lion above is now available on the listings again

Any screenshots you can provide us with?
I don't think I can screenshot this problem

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:
Went to put lion up for trade, unsecured them/removed them from hunting and hunting parties, went to add them onto a trade, they were not there. Waited a while, checked it again, they were able to be freely added.