Simian sphere + taunt broken, Dalaran adventure

Playing ol’whats-his-name in Dalaran. Got the simian sphere thing (invincible, untargetable Mukla). Then I was able to add 2/2 and taunt to Mukla with the houndmaster.

Theoretically that’s the game over there. But apparently this taunt doesn’t work. I had a 8/2 hyena behind the taunt and the enemy completely ignored it. Enemy was able to attack anything at will. Don’t allow a damn taunt if you won’t honor it.

Here is part of the game:

Immune makes a minion untargetable and undamageable. Anything that makes a minion untargetable to your opponent (stealth and immune effects) negates the taunt effect.

This isn’t a bug.