I’m still seeing this problem, actually, in R375. See the attached video. I place a building blueprint at 3:10, then work with it to try to include stairs so my guys can reach the second floor, and then at 6:16 am finally done with that and set the house to be built, but no action is undertaken at all.
This was mentioned in a recent dev stream a swell, so I imagine the developers are aware of it.