Charmed Pet Disappearing

[Ronon Dexx]

I've been leveling my druid who is currently level 20. I've been in East Karana charm killing some animals out there. 3 times now my charmed pet has completely vanished. I don't get the charm break in any of my chat windows. My pet just vanishes. Usually what happens when charm breaks is the mob starts running back to me in which case I re-charm. However in my case my pet just vanishes. There is no body or anything or any chat message saying charm breaking. Also in each 3 cases there was nothing attacking my pet so It didn't die ( I fear the mobs) nor was I to far away. I was wondering If anyone else has encountered this before? is it just druids? or does it happen to enchanters and necro's who charm as well?

Thanks in advance for any help.