Water deletion while flowing, pumping, and/or venting (game breaking when finite water is major problem)
I have read about water deletion from falling... but this is from either flowing or interaction with pump, pipe, or vent. (I assume contaminated water doesn't lose mass when emitting cont. oxy. especially since I did not see tens of kilograms of cont. oxy. added to room.
Steps to Reproduce
Make a shallow tank of regular tiles 10 wide, put a liquid vent on the bottom left and a pump on the bottom right, connect the two with plumbing. Pump contaminated water into tank until water flows between vent and pump, and cut off external water, I went to about 70kg of contaminated water per tile. watch as water is deleted from closed system. I saw 70kg/tile drop below 20kg/tile in less than one Cycle.
This issue has not been confirmed by a developer yet.