Some NBT tags don't work in Spawn.json

[Tusason]

I tried a very simple script in which I wanted to add the following tags to all spawned mobs in my world: Invulnerable, noAI, Silent.

Here is the script:

[

{

  "eventspawn": false,
  "when": "finalize",
  "result": "default",
  "nbt": {"Invulnerable":true, "NoAI":true ,"Silent":true}

}

]

Strangely enough the NoAI rule seems to get applied correctly to all mobs but the Invulnerable and Silent nbt tags have no effect.

I also tried summoning a mob with the same tags as a test through a command to see if there was an issue with my game and that worked perfectly fine. Here's the command.

/summon zombie ~ ~ ~ {Invulnerable:1b,NoAI:1b,Silent:1b}