Some mobs shoot backwards when on boats, boats with chest, bamboo raft or bamboo raft with chest

The bug

Some mobs shoot backwards when on boats, boats with chest, bamboo raft or bamboo raft with chest.

Affected mobs

• Skeleton
• Stray
• Wither skeleton
• Drowned
• Illusioner
• Pillager
• Witch
• Snowman
• Llama
• Trader llama
• Guardian
• Elder guardian
• Blaze
• Piglin
• Ghast

Steps to reproduce

The following steps are based on the example of a pillager.

1. Summon a pillager riding on a boat.
   Pillager

   /summon oak_boat ~ ~1 ~ {Passengers:[{id:pillager,equipment:{mainhand:{id:'minecraft:crossbow'}}}]}
   

2. Stand behind the pillager.
3. Switch to survival mode.
4. Noticed that the arrows were fired from behind the pillager's back.