I've started to do the new quest together with a friend and since her got some hard errors (Something involving gear-menu and not being able to move their warframe afterwards. He will probably make a different thread about that later.) I aborted the second mission of the quest, causing me to apparently skip this mission. At this point the quest still pointed me to the same node, but without the "Track Teshin" title, and Lotus was saying her text-lines for the next part.
As we were going into t