In Highblock Halls after you enter the well, there is a door you use a switch to reveal which transports you to a village.  The objective is "destroy the buffet".  When on SS Co-op with two players, the player who hits the travel button is clipped into a fence post.  There is seemingly no way out of the fence post.  When the other player tries to teleport you by moving far away, they get teleported into the fence post as well.  This required a restart of the mission to move on from and we are unable to finish the mission.