Klicking stacked buckets, 16 for example all in the tank with shift will only give you one bucket with the fluid you had in your tank.

Also, another thing, I don't know if it's a bug, but could you change that please?
When you only have less than 3 tools they go in the backpack and you can't scroll trough them anymore, you got to have 3 tools, that's annoying sometimes.

I'll tell you about more bugs, when I find some, keep that work, thank you so much and tell me if you accept donations one day.
~SingingPandi