It seems whenever a stair item is dropped on the ground, they apear MASSIVE. Same with viewing from third-person.
-Edit: The problem was the resource pack I’m using (Golden Day) which I forgot I enabled! The problem does not exist in any of the default resource packs, apologies for the misunderstanding!!!
Unable to reproduce; the hitbox of the stair item entity appears completely normal. Additionally, it is noted that you are using a resource pack, which may be the cause of the issue.