Losing Milk Buckets When Collecting Milk

What I expected to happen was...:
I expected to collect milk from a cow

What actually happened was...:
Instead the bucket vanished without a trace, I had a few open slots it could have gone to but it just vanished...

Steps to Reproduce:
1. Gather Milk (I think there has to be milk in the world but idk)
2. The Milk Bucket Vanishes, No Bucket, Nothing