I was in Wintertusk, in Vestrilund, and I was in the middle of a fight with the snow skulls there when someone randomly seemed to be able to enter the building even though there was a sigil on the outside - they went around the battle circle I was in and went up the ladder to light the signal fire, and then back out. I was pretty sure this was a bug of some kind? I don't think you're supposed to be able to do that but I thought I would report it so it could get fixed. I don't have any friends on my friend list (as I prefer to solo mostly), so no one ported in to me, and I wasn't in a group. I was soloing at the time on my Ice character.
