I've found that by sticking muck tubs & other buckets filled with water in the UC withdraws from that if you do not have containers filled with water on your character if this is the issue you are having similar to what I would've posted. 😄
#transfer fluids
south rune
What I do with cooking oil so far until they fix that issue is, if I've a bottle that is around 0.5 lbs with contents still inside of it I would drag & drop what's left inside of the stove to the fluid department section. then grab another low bottle & do the same until I reached 250ml of cooking oil for what I'm making. if it goes past that I normally leave it until I plan to cook the next food that requires it