Warden will kill itself after receiving damage from a /damage command with the enforcer set as warden

When the /damage command is used and both the victim and the damage target are set as warden, the warden will keep attacking itself and commit suicide

Steps to Reproduce:
1.Spawn a warden
2.Type"/damage @e[type=warden] 0 anvil entity @e[type=warden]"in the chat bar or command block
3.Execute it

Observed Results:
Warden hit itself

Expected Results:
Nothing happen