When milking a cow and killing it at the same time causes an infinite milk bucket item

What I expected to happen was...:
to get a non glitched out milk bucket

What actually happened was...:
I got bored and wanted to do something fun so I also had bad omen so I wanted to see what would happen if I killed and milked a cow at the same time so I did and the milk bucket got glitched out and I did it again to make sure it wasn't a one off thing and it happened again

Steps to Reproduce:
1. take an iron sword and critical hit a cow
2. ... then take a bucket and use LMB and RMB at the same time until you killed the cow
3. after that drink milk in bucket