I made a set of stairs to let gravity do its job of transporting liquids, but I meet with a pretty harsh bug. after about 8 or 9 stairs of water dripping down, all the water magically vanished into the void.
One this screen shot, the pool above was filled with contaminated water, after i set the stairs to drain the water, all of gradually vanished by the 7 or 8 stairs.
Steps to Reproduce
find a pool of water in a slime bio, build a large set if stairs under it, have a destination tank where all these water should end up.
This issue has not been confirmed by a developer yet.