Witches failing to spawn at a witch hut

When attempting to create a witch farm in a survival world, I found that witches do not reliably spawn in a witch hut. This doesn't make sense to me, as I've watched several tutorial videos that all explain the exact method of getting witches to spawn consistently. I first noticed this issue when attempting to find the spawn block of the witch (as the video said to do, by using glass panes). After many attempts and spending the entire in-game night trying to walk away and walk back to get a witch to spawn, it never worked once. I made sure to kill the witch that was (supposedly) tied to the hut, so it would spawn more.

As far as recreating the bug goes, I am unsure of the exact cause of this bug. However, here are some things I have found that may be related:

• Height of the witch hut

• Age/size of the world

• Mob count

• Witch spawning mechanics not being consistent, intentionally or unintentionally

I have found a video that may explain the issue in further depth, which is linked here:

https://www.youtube.com/watch?v=gHaMNzxsoa4

More details:

• Within the videos I watched, a witch spawned within seconds for them, and this spawning was quite consistent.

• All of the tutorial videos were recorded in, and meant for bedrock edition, and they were recent.

• I have looked at past bug reports that may be related to this, however they are marked as resolved. I have noticed people saying that the issue was not resolved though.

• My world was created in a 1.19 version.

• The hut is located at roughly x 300, z -4000.

• My world seed is 1397550077802556075.

• I have never had a single mob farm work at 100% of the intended rate in bedrock, and most of the time for me they might not work at all (again, the tutorial videos I watch are intended for bedrock edition). I have been playing Minecraft for many years though, and it could be down to farm design or mob spawning mechanic issues.