The Bug:
Relates to MC-150455.
Whether or not you are affected by fire is always calculated as if the fire were a full block. This means that fire on the side or bottom of a block can damage the player further away than its hitbox.
Steps to Reproduce:
- Place any flammable block, for example an oak log.
- Set fire to the side of the block using a flint and steel.
- Put yourself into survival mode and walk into the block.
- Walk slowly away from it.
It will still set you on fire and damage you in even though it does not look like you are touching it.
Can confirm 23w43b. I would like to request ownership of this issue to maintain it.