Warden's attack target goes to another latitude, he will run to the same coordinate at the current latitude and attack (as long as it is not too far), and can hit, both distance and melee.
How to reproduce:
2 players recommended , prepare a portal (The Nether or end) , and the coordinates of the two places are close
1. A player angers Warden and runs into the teleporters
2. Another player follows Warden (recommended creative mode), you will find that Warden wants to run to the coordinates of the player who is chasing at the corresponding latitude
3. Warden will start attacking when it reaches the attackable range of the corresponding coordinates
 

If the English translation is wrong and you can't understand it, here is the original text:

循聲守衛的攻擊目標跑到別的緯度,他會在當前緯度跑到相同座標並攻擊(只要別太遠),而且可以打中,遠戰近戰皆可。

重現方法:
建議2個玩家
,準備一個傳送門(地獄或終界皆可)
,並且兩個地方座標相近
1.一個玩家激怒循聲守衛並跑進傳送們
2.另一個玩家跟著循聲守衛(建議創造模式),你會發現循聲守衛想跑去正在追的玩家在對應緯度的座標
3.循聲守衛到達對應座標可攻擊範圍內就會開始攻擊

 
If you don't speak Chinese, here is the video:
https://youtu.be/w3L9LlUrFBQ

https://youtu.be/Tz2Vy9_6kmU

https://youtu.be/D9cCQVEIWwg

 
I try to search for errors before creating the report