Minecraft Bedrock crashes when elder guardian is killed in Survival mode

Seed: Coastal Village (-1813740965); Survival Mode; Normal Difficulty; Infinite Size; world created in Beta v1.16.0.55.

Steps to Reproduce:
1. Go to Underwater Monument x3721 z167
2. Throw trident (impaling, loyalty, unbreaking, mending enchantments) at elder guardian (top of monument) 
3. Throw trident 4 times or hit elder guardian with netherrite sword (looting, power 5, unbreaking, mending enchantments)
Observed Results: Minecraft Bedrock v1.16.100.50 crashes, see attached video.
Expected Results: Elder guardian is killed and game play continues.