Warden AI breaks (becomes passive, starts spamming random animations) if you repeatedly update its CustomName

Steps to Reproduce:

  [Step 1] Summon a warden (use spawn eggs or /summon)
  [Step 2] Place a repeating command block 

/setblock ~ ~ ~ minecraft:repeating_command_block

  [Step 3] Enter this command in the repeating command block: 

/execute as @e[type=minecraft:warden] run data modify entity @s CustomName set value "hello world" 

  and set it to always active
 
  [Step 4] Switch to survival mode and interact with the warden

Observed Results:

Warden becomes passive and may start spamming the sniff/dig animation.

Expected Results:

Warden's behavior should be unaffected by the custom name change and it should attack all mobs around it.

Notes:

This affects map/data pack makers, preventing them from updating the warden's custom name too often because its AI might break.