Split-screen co-op causes add-on resource packs to stop loading properly for all players

Summary

Split-screen co-op causes add-on resource packs to stop loading for all players, making newly placed custom blocks invisible until the game is fully restarted.

Description

When using a purchased/applied Add-on (Resource Pack and/or Behavior Pack) on a local split-screen co-op world, the resources corrupt or fail to load correctly as soon as the second player joins. This issue is persistent and affects both players placing new items.

Steps to Reproduce

1. Launch Minecraft: Bedrock Edition on the Xbox console.

2. Sign in with Player 1 (Host) and load a world that has a Marketplace Add-on (with custom blocks/items) applied.

3. Player 1 can confirm the add-on is working correctly (custom items have their correct textures).

4. Player 2 (Local Split-Screen Co-op) joins the world.

5. Player 1 or Player 2 places a custom item/block from the add-on.

Observed Result

1. Player 2 cannot see the custom item/block; it is invisible (missing texture/model).

2. The problem immediately affects Player 1 (Host) as well: any newly placed custom blocks also become invisible to the host.

3. Items already placed before Player 2 joined remain visible to the host, but not the second player.

4. If Player 2 leaves the game, the issue persists for Player 1 for the rest of the session. The host must fully close and restart the Minecraft application to fix resource loading.

Expected Result

1. Both Player 1 (Host) and Player 2 (Split-Screen Guest) should be able to see the textures and models for all blocks and items from the active add-on.

2. The game's resource loading should not break or corrupt upon the second player joining.

Workarounds Attempted (and Failed)

• Having Player 2 exit and re-join the world.

• Removing the add-on from the world, saving, and then re-applying the add-on.

• Checking and changing Video/Graphics settings (e.g., Fidelity/Vibrant Visuals).

• Deleting and re-downloading the add-on from the Marketplace.