Zombified Piglin missing ear

Seed: Coastal Village (-1813740965); Survival Mode; Normal Difficulty; Infinite Size; world created in Beta v1.16.0.55.
Steps to Reproduce:
1.Start Minecraft Bedrock Beta 1.16.20.50 on a Windows 10 Pro PC v.2004 Build 19041.330
2.Create world seed: Coastal Village (-1813740965); Survival Mode; Normal Difficulty; Infinite Size; world must be created after Beta v1.15.0.53 before Beta v1.16 Nether Update.
3.Create Nether Portal in OW: x=961 y=64 z=6
Observed Results: Zombified Piglins are missing an ear, see attached video.
Expected Results: Zombified Piglins would have one ear.