The Warden can burrow while standing on the barrier

If the unnamed Warden does not find anyone in a minute, he will shut down because he could not find anyone. But it turns out he can do it even if he stands on the barrier. For reproduce:

• While in Creative Mode, get a barrier with the command /give @s minecraft:barrier or turn on the operator tab and take it from there.

• Build a pole of decent height and build a small platform of barriers at the very top. You can demolish the pillar.

• Summon the Warden with the command /summon minecraft:warden or spawn egg.

• Do not call it a tag, otherwise you will prevent it from being buried!

• Wait a minute and after that the Warden will bury himself right in the barrier. This sight looks funny)