Map loses Resource and Behavoir back after reentering the map loaded with .mcworld file

[alpha 1.1.0.3 332621]

Summary:
Map loses Resource and Behavoir back after reentering the map loaded with .mcworld file

Impact: Player won't understand why the resourcepack is not present if the player returns to the play to map.

Repro Steps:
1. Load Map_withResourcepack_active.mcworld
2. Save and Quit the game
3. Play the map again, going through the UI

Observed Results:
Texturepack is not active on second load of a map.

Expected Results:
Resource and Behavoir stay active after quiting and reentering the map.

Screenshots/Videos attached: Yes