When ever I reload my savegame (or any of the autosaves, etc.) some of my hydrophonic farms drop their liquid ingredients.
In my save only mushroom farms drop (not) their polluted water. (bristle farms don't drop their water.)
I mixed them up (with Pincha Peppers) and didn't realise they needed Slime instead of polluted water to grow. But should they drop the liquid ingredients? Spent some time figuring, why are those bottles lying there every so often.
Screenshot just after loading game.
1) Try to grow shrooms with polluted water
2) save game
3) load game
4) polluted water drops