Turn on hitboxes: F3 + B
Run command: /summon minecraft:creeper ~ ~-0.4 ~1 {attributes:[{id:"minecraft:scale",base:0.2f}]}
Notice entity contains default hitbox scale on the first game tick instead of the provided attribute.
Possibility related bug: MC-279048
Environment
Any vanilla Minecraft world without any resource or datapacks
Linked issues
relates to 3
MC-277508
Scaled shulkers' hitboxes aren't positioned correctly during the first tick
Resolved
MC-279048
The camera is positioned incorrectly for a brief moment when reloading into a world while having a modified "minecraft:scale" attribute value
Open
MC-267765
Scaled entity hitbox is not saved when reloading the chunk while ticks are frozen
Open
yeah but i think the game waits a millosec before changing the hitbox but yeah its true