give spawner does not work properly in mcfunction

When giving a spawner via a function, the placed block does not work vs when given via in game command.

To replicate - In a function, triggered by /trigger SpawnerPack set 1,
execute as @a[scores={SpawnerPack=1}] run give @s spawner[block_entity_data={id:"mob_spawner",SpawnData:{entity:{id:"minecraft:cow"}}}] 1

gives a spawner that SAYS it’s cow, but when placed does not have the mob. when

/give @s spawner[block_entity_data={id:"mob_spawner",SpawnData:{entity:{id:"minecraft:cow"}}}] 1
is ran in game, the spawner when placed DOES have a cow, and works.

EDIT : Solved