I did not have this problem, but in response to the GM support if you are not happy with the answer you got PM Stormshade he is the forum leader, and he said he would prefer us getting touch with him, than discussing/ slamming GMs in the forum.
Am I the only one to have Hakeev die on a pile of rubble on the ground?
I feel lucky.
Na, first run no problems at all and second run he was jumping around a bit, but i pulled him down quite easy... maybe also the fact that i only melee boss mobs...
I've had the "Hakeev with Moon Shoes" problem and after reading the 500+ posts about it in this forum I discovered that melee attacking Hakeev will minimize the issue.