Piglins don't drop their inventories when converted into Zombified Piglin. This bug is fixed in the Java Edition (as of 20w22a)
Steps to Reproduce:
1. Spawn a Piglin in the overworld
2. Give any gold item (block of gold, golden apple, etc)
3. Wait until it converts to zombified piglin
Observed Results:
The piglin don't drop their inventories after being zombified
Expected Results:
The piglin drop their inventories (anything you give them earlier)
Do they still drop their inventory if they are killed?