Guild Wars 2

Saw this the first time, we captured a tower, it was claimed by one of our guilds and we all got marked instead of the enemies. You see that pretty clearly on the screenshot (compare the guilds).

to add: we are still marked even after teleporting out of the tower, now it says were marked by Kalevala (the guild which captured the tower afterwards)

The other server said it was visible on their minimap (when we tracked our own!)

EDIT: happend twice now (bravost). Had to leave WvW to get the tracker removed

I have noticed this too. Playing as green, blue attacked and captured one of our towers and now I can see their location on the map, including within their own spawn.

Confirmed. See it on enemies. See it on allies.