Killing a zombie right as it converts into a Drowned will drop the loot from zombie while still converting into a Drowned

See from 8:08 (link starts at that time) to 8:55.
Tutorial for 1.14.3: https://www.youtube.com/watch?v=S8MhmGO8mLs

This allows for item duping as whatever the Zombie is holding will be duplicated as it turns into a Drowned. I'm unsure if this is already reported as I believe it should be a Private issue as it is a dupe glitch, but I am reporting it either way.