when someone disarm me, I can´t equip my shield, even it´s off hand...

I have to unequip by hand my two-hand weapon into Bag, only then I can equip shield,



How it should work: on every server , even official tbc I had not this problem. when I got disarmed, I simply used my macro for defensive stance and shield to keep myself tanky as much as possible while i was without weapon

/cast Defensive Stance
/equipslot 16 (weapon)
/equipslot 17 (shield)