World gets stuck on “Generating World” “Loading Resources” when I have a texture pack enabled

When I load a world with 1 or more texture packs enabled, the game will get stuck on “Generating World” “Loading Resources”. If I switch to another app while it is stuck then go back, it will load properly. If I load the world without any texture packs enabled, it will load properly.

Below is a screenshot of the bus occurring with the Plastic Texture Pack enabled.