Dupes can stand in mid air on open doors via automation

You actually need no automation at all. Just place a door sideways and open it via the menu. All dupes can walk as if it were solid.

I hope that when this gets fixed, they also add something like a wooden plank that has these properties (can jump through, items fall through, dupes cannot hang on it like ladders would allow).

Edited February 20, 2018 by Candide
misspelling