I'm playing on 2.1, and when replacing belts with underground belts (or vice versa), repair turrets sometimes place them in the wrong orientation. Using the Undo button doesn't do anything to the incorrectly placed belts, though weirdly, Undoing and then Redoing deconstructs them. The chance of it happening seems to increase as more repair turrets overlap, though it happens 100% of the time with even a single advanced repair turret.
