Some game features or code have changed, causing this and other Minecraft add-ons to stop working properly

While testing the new beta version of Minecraft, there is a bug with a marketplace add-on. Before the beta version of the game was updated a few days ago, the add-on was working correctly for me, but now it doesn't. I don't know if the creators of this marketplace content have anything to do with this bug, but if possible, I would like it fixed. The world I'm using is in the marketplace and is called City Life 3. I believe they changed something in the game in the new version that caused this add-on to stop working. Animations and functions no longer work properly, for example: NPC animations no longer work correctly; they remain static and no animations work. Also, in one of the cars that comes with the add-on, to enter the vehicle, you had to open the doors, and then a button would appear that let you enter the vehicle. When the vehicle is moving, the doors remain closed. If possible, I would like you to test this world on an earlier version and also test the same world on the current beta version so you can better understand this bug. I think the creators of this content will no longer update it to work, and it didn't just happen with this one, I was trying more add-ons and all of them no longer work correctly or are altered, again I say that I think there was a change in the codes or functions of the game, the new changes in the new version damaged all the add-ons I was using, I tried to download new ones and they don't work correctly either.