The bug:

A player's hitbox hides while they are on invisibility even if they are fully equipped with armor.

This bug makes fighting someone frustrating for people who are used to having hitboxes on at all times (to increase visibility and aim).

Steps to reproduce:

1. Turn on hitboxes (hold F3 + B)
2. Make someone fully equipped with armor.
3. Give them the invisibility effect.
4. Notice how their hitbox hides even though they are fully armored and clearly visible.

Intended behavior:

A player's hitbox does not hide if they have the invisibility effect on because they are still clearly visible even without the hitbox.

Actual behavior:

Their hitbox hides if they are fully armored and have the invisibility effect on.