[CD][HR] Premade pets and horses are not populating in new saves

I have tested this without mods in a fresh install with a freshly generated Sims 4 folder in the documents folder, and the bug continues to happen when creating a new save in a completely fresh environment.

When starting a new save, all premade pets (Cats, Dogs, Horses) will fail to be added to their respective households. They will still show up in the thumbnails if you immediately enter manage worlds after creating a new save, but they will be missing when you check the household members, and they will vanish from the thumbnail once the household's thumbnail regenerates during live mode. 

As seen here the household looks normal at first glance just by looking at the thumbnail.

However, trying to transfer household members reveals that Flapjack is missing.

The same issue affects the Whitaker household which is immediately apparent due to the move in button being disabled with a tooltip indicating the household is empty.

When attempting to transfer household members, this is immediately shown to be true.

Because the Whitaker and Mayor Whiskers households are empty, they will immediately be culled upon saving and reloading the game.

Here I reproduce the bug in a fresh installation with a completely empty Sims 4 folder which will regenerate with default settings once I start the game. OneDrive is paused, so none of my files will be synced to interfere with this test.

I then accepted whatever random sim CAS started with, randomized the traits and name, and moved them into a starter home.

Then I immediately went to check on the Mayor Whiskers household and the bug manifested once again.

All premade households with pets from the Cats and Dogs pack and the Horse Ranch pack were affected.