The game can Sometimes crash when adding resource/behavior packs to maps/template worlds.

This has happened to me multiple times in the most recent 1.21.x versions.

Steps to Reproduce:

1. download the 15 years world by Oreville Studios,
2. download the 15 years addon by Minecraft,
3. Create the world.
4. add the pack to the world
5. CRASH

It doesn't happen all the time, but when it doesn't crash, the world takes minutes to load after exiting and relogging.

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Observed Results: Worlds Screen freezes, for about 3secs, you are then thrown out of minecraft to the xbox home screen.

Expected Results: It would perhaps give me a message, saying, 'addons are not compatible', or something like that.

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Note: I do not know if this happens on other platforms, (my phone has no space to download the worlds & stuff), but I expect that it would?

thx