What gameplay feature is this bug affecting?
Messaging

What's the issue? Please include any error messages you receive and as much detail as possible.
It seems messages are getting deleted from my sent box, and maybe my inbox as well? I sent a message to another player earlier and when I checked my Sent to see if they'd opened it, it wasn't there. So I accepted their friend request and it was in my Sent for a bit, but it's gone now and I've been waiting to hear from this player about buying a lion.

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
Not really

Any screenshots you can provide us with?
I didn't take a screenshot of it in my outbox but I do have the screenshot of them NOT being there lol

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:
Someone sent me a friend request. I replied to the friend request and went back to playing. Came back to check if they'd opened it, it was gone from my Sent. Thought maybe I made a mistake and went ahead and accepted the friend request so we could message and checked to see if it was in my Sent Messages (it was) but I checked again just now and now that's gone too. Unsure if it's preventing me from receiving a message from that player as well