warrior /shield bug?

[Manguadi]

Grimar and Woldaff were shielding each other in a 6-man group yesterday. As often as it gave the shielding message, it would also say, "up to two warriors may shield a single target" or something to that effect. There were only two warriors in the group/zone at any time.

 

[stope21]

This is because when you shield someone, they get your shield, then when they shield you, they are shielding you with their shield plus your shield which you gave them, even though you already are shielding yourself with your own shield, then you are shielding the other person with the shield you are wearing plus the shield they are wearing plus the shield you already gave before and this is >3.

P.S. This is complete speculation.