Guildboss triggers weird bugs?

~1h ago after killing our guildboss ALL of the present members got this achievement marked as done (see screen below). The weird thing we did kill Abel Tharn (Corzine) as guildboss, no Ice Rock Golem

anyone know what caused this or weither this is a bug or intended?

2nd weird thing i had 2 Guilldchats in the sanctuary - after few minutes into the guildboss i had in the normal "guild" chat both chats of Reawakening, and of Blutleute, the Guild i have my Char on the german server in (which is not even the same char), was really confusing O.O

Tenkai wrote:

Oh you had our Guildchat? But this bug is really Weird. but if i remember right i had the same Issue on DP too.

there i was in Dovahmir and i did read the another guild on the German server as well

Haha yeah had it for ~1h then got too confused with 2 active guildchats lol and restarted the game, that fixed it. But still veeeery weird

GreenDeath wrote:

try to use that skill on your mage, when you summon that ice rock golem to attack for you while doing guild boss.

i´m pretty sure you get that achievement whenever you use this skill doing the gb, we had the same

That would be really weird because the only 1H Mage in the guild (and at the boss at that time) is me, and i dont use the golem O.o