Minecraft Username: Unnbearable Brief Description: If I use command /fill lava on a stack of 16 buckets, they create a stack of 16 buckets of lava. Instructions: 1.take a stack of 16 empty buckets 2.typ /fill lava 3.all 16 will be stacked together .. How many times did you recreate this? 2 times in a row Result: Lava buckets stack. Expected Result: Lava buckets are supposed to be in stacks of 1 only.
This is how /fill has been working ever since I got that feature 3-4 years ago, I'm not even sure whether this is a bug or an intended feature. (Same applies to /fill water.)