I'm having the same problem but on windows 10, affecting both 1.13.0 and 1.13.1, video proof (camera recorded, sorry)
. There is a temporary workaround though, the root cause of the bug seems to be the milk bucket and the last bucket of a stack seems to be the only one bugged, just tap it twice when milking the cow and that should debug it, workaround video:
I am having the same issue on Windows 10, 1.13.0 and 1.13.1. I attached two videos (camera recorded,sorry) of the bug.
I attached a video (camera recorded sorry) showcasing the bug
and another of the workaround KillerbeeNL mentions
Same issue, see the workaround I mention here. The root cause of the bug seems to be milk bucket.