Filled buckets are stackable (Since 0.7.1)

Since 0.7.1 filled buckets were separated and werent stackable, but now im having this issue in 0.7.1, that filled buckets are stackable and thats annoying because i cant organize easily . It happens too with milk buckets, if you have a stack of empty buckets, and if you get milk, you will get a stack of buckets of milk in a row.