The Bug:
If an arrow is shot from a crossbow which is enchanted with piercing towards an entity that is standing up against a wall, it is able to phase inside, or even through that wall.
How to reproduce:
- Build a wall that is one block thick
- Place an item frame on that wall
- Fire a piercing crossbow at the item frame
/give @p minecraft:crossbow[minecraft:enchantments={levels:{"quick_charge":3, "piercing":3}},minecraft:charged_projectiles=[{id:"arrow"}]]
Observed Results:
The arrow will either phase through the wall, or land inside of the wall depending on the angle it is shot from.
Expected Results:
The arrow would kill the item frame entity, and land against the wall.
Screenshots/Videos:
Short version: Minecraft 1.14 2019-04-24 17-23-02.mp4
Long version: https://youtu.be/05IR4RXe2GQ