[0.17.31] Construction bots don't place refineries but nothing is blocking them

[Cutemine]

Hi!
I was just trying to use a blueprint from 0.15 (worked well in 0.16) and everything works but the robots won't place refineries.
The just hover over it (like when a tree is blocking the construction space and awaits deconstruction), return for power and visit again without placing them.
As far as I can tell, there's nothing in the way. Deleting the blueprint and adding a new construction order has no effect.

17bug.zip

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vlcsnap-2019-04-14-17h47m06s901.png (3.38 MiB) Viewed 1436 times

Edit: Manually placing the refineries does work, but setting their recipe does not due to apparently mixing fluids. I'm not sure how they could mix since there aren't any fluid connected yet.

[Rseding91]

They won't place because it's going to cause fluid mixing.

[Durr]

It looks like you have two water pipes going to the refineries. The bottom water pipe of the sulfuric acid plant is connected to the refineries.