The quest chain for helping Kasmeer train the cubs in Grothmar seems to be stuck, I haven't seen it go in at least a full day and the cubs are idle at the end of the path where I think she's supposed to portal them back.
This is a common bug just like the ghost event to the northeast getting stuck with NPCs even porting back to their spawn. Majorly annoying. Has not been permanently fixed by ANet yet...
Try to find another map instance.
♀ Gallery: Guild Wars 1 Memories
No more LW episodes, only Expansions and Side Stories, please!
I did it just a couple of hours, or so, ago. Did the pre-event, as well.
As above, try guesting to get into another map.