Mercenary's "Doom" Giant Thresher

[Nicator]

I made a "Doom" Giant Thresher some days ago and enjoyed the graphics and damage the level 87 Might mercenary was making. Everytime he was in danger, my bowazon healed him with full rejuvs.

No luck yesterday when some succubus casted amplify damage on him and my valkyre, followed by some ultra-fast fanatic frenzytaurs. After resurrecting him, I came back to Worldstone Keep level 3 seeking for revenge, and on my way I noticed there was no Holy Freeze aura below him. Not that it would have make any difference, so I went to Act 4, Pandemonium Fortress and went down the stairs.

He had no Holy Freeze and looked as if no weapon at all because the speed at he was killed by some regular Venom Lords. I resurrected him again, looked at his weapon, removed it and positioned in place again. Voilá, Holy Freeze again, and he could tank again.

Needless to say that after that, I did the same, removing and placing again, with his Stealskull and Gladiator's Bane.

I'm wondering if the bug is related to the runeword or the whole mercenary when killed.