if you use the DROP_AS_PILE keybind on liquids in a container it will be poured on the ground:
[02:13:32] You pour the water on the ground.
Same with DROP keybind.
This is surely unwanted - as Pour -> On ground is already moved to a subfolder to prevent accidental use.
I've just lost my coc water this way - accidentally hovering the mouse on the water instead of the barrel