I relized that when interacting with a smithing table with the hitboxes ON (F3+B) it shows the hitbox of the armour stand on the GUI.
I think this is a bug because you can not hit the image from the GIU and maybe this could create issues counting it as a real entity (I dont know if this happens, but it looks like it does)
Thank you for your report!
We're tracking this issue in MC-263970, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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