Drowned will not throw tridents by using /replaceitem command.

This bug starts since 1.2.13.8 using /replaceitem command.

Steps to Reproduce:

1. Spawn a drowned
2. Enter the following command:

   /replaceitem entity @e[type=drowned] slot.weapon.mainhand 1 trident

3. Switch to Survival mode

Observed Results:
The drowned does not throw the trident.

Expected Results:
The drowned should throw the trident.