It would have moved to Aeonaxx, sat on it and not mounted. Same thing happened to me.Today I was farming Aeonaxx while I was at work and came back to my PC and saw
[4:59:52 PM:564] Rarekiller Part Aeonaxx: Aeonaxx Location: 1858.345 / 78.56117 / -16.9221
[4:59:52 PM:564] Rarekiller Part Aeonaxx: My Location: 1857.969 / 80.32074 / -16.14393
[4:59:52 PM:565] InteractDebug:283038280
[4:59:52 PM:586] Interact Done:283038280
[4:59:54 PM:586] Rarekiller Part Aeonaxx: Dragon Location: 1858.345 / 78.56117 / -16.9221
[4:59:54 PM:586] Rarekiller Part Aeonaxx: My Location: 1857.969 / 80.32074 / -16.14393
[4:59:54 PM:901] Rarekiller Part Aeonaxx: Take Screenshot after Mount up
but I don't have the mount in my bags. Does this mean that Aeonaxx spawned and the bot found her, but didn't move to her? Or did someone else beat me to it?