[Sloved] if use /npc type FALLING_BLOCK
use command /npc item CHEST (Although it doesn’t work for me, the hitbox remains, but the appearance of the chest itself is not there. But it works with other types of blocks.)
Maybe a stupid question, but I can’t find how to disguise an NPC as a chest. I see the command /npc type FALLING_BLOCK but it’s not clear how to specify the block type... There is no information on Wikipedia.