Mobs specific to structures aren't spawning in their structures

The Bug

Mob spawns specific to structures like Witches in Witch Huts & Guardians to Monuments aren't spawning there anymore

Affected Structures

• Monuments
• Witch Huts
• Pillager Outposts

Reproduce

• Create a new world
• Do /locate on any of the structures listed above
• Teleport there
  Notice none of the mobs spawn

Expected Result

The mobs spawns specific to those structures would spawn as normal

Original Description

I have found that mobs other than witches are spawning in witch huts. This is a newly created world and has not existed in any other versions.

As you can see in the pictures, I have been careful to only include the spawning area of the hut in the setups pictured. I was in creative mode. I hovered 115 blocks above the hut during the day to get these results.

There are also problems with witch farms migrated from 1.17.1.

One possible reason is the large distance from spawn that this location is in (>20 million). However, this did not cause issues in the world migrated from 1.17 before it was brought to the latest snapshot.

This is happening in two worlds - one freshly generated and one brought from 1.17. They are both on the same seed.