Pet will randomly bug out when climbing various harpy towers. Without warning the pet goes POOF, Again sometimes without the 10 second warning just the warning at the same time as pet poofs. I've been able to reproduce on various climb spots the pet tether will randomly just exceed limit. Can be problematic when mobs are near as you'll be without your only form of survival.
This Test conducted at Harpy Cloak Climb
https://youtu.be/qerMGP9tbOc
edit - fixed video should now be public