The equipment slot incorrectly displays the player's name(Like nametag)[Not translated by the browser]

I found this bug in 1.16.5 and experimented with it in the latest version 1.20.4. When the player is in spectator mode and possess any mob, the equipment slot will incorrectly display the player's name above the player's head, similar to what other players see above their heads. 1.16.5 will show full, 1.20.4 will be too high. Thank you Mojang for this bug and fucking MC-269257!

Video:1drv.ms/v/s!Am8_BUg-xUyppUMt3ng9VEfsswyg?e=fEd0bK