First, sorry for my English.

The bug is this : If the /gamerule keepinventory is on true

And if a player / mob kills you while drinking or eating, And you die

You still eat or drink the thing. And lose it

For example you are trying to eat a golden apple But its too late and you die 

"You Died" screen will come, but you will continue to eat the gapple.

Thank you for reading this I hope you will fix the bug soon.

I saw this bug playing a map with 1.10.2 and 1.15.2 so i select 1.15.2 in "affects Version/s"