Xbox: Downloaded resource packs from realms and servers aren't saved into the game

As of October 5th, the day where the performance update has arrived for Xbox players, every time you try to join a featured server like Cubecraft, The Hive, etc, the game will make you download the resource packs from the server, even if you already have downloaded before.

Stepts to reproduce

1. Join a featured server like Cubecraft/The Hive. The server's resource packs will download normally, after that, you'll enter the server.
2. Close the game and join the server again
3. Notice how the resource packs are download again

Expected

You only need to download the content one time.

Actual

You need to download it every time you try to join the server.

At Windows 10, you may also:

1. Join a featured server, Cubecraft.
2. After downloading the resource packs, return to the start screen.
3. Go to options --> Storage --> Cached data and notice the downloaded packs stored.
4. Close the game and go to that local again, and see the packs saved.
5. Repeat the same process on xbox

Expected result

The downloaded packs appear saved on Xbox.

Actual result

No downloaded packs are actually found/saved.

Some things to note

This also affects Nintendo Switch and packs from realms (MCPE-142588)

From featured servers:

• Mineplex seems not affected (Mineville and Lifeboat have not been tested yet)
• This is actually annoying.