World is completely black when using resource packs

Summary:
When in a world with a resource pack enabled, everything except for the sky and UI renders completely black.

Resource packs tested:

• Adventure Time
• Star Wars
• Steven Universe

Steps to Reproduce:

1. Open a world with one of the resource packs listed above enabled

Observed Results:
Everything in the world except for the sky and UI renders completely black. If the player is underwater, the issue does not occur.

Expected Results:
Worlds should render correctly when using resource packs.

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Original Description:
When entering a world, everything is completely dark, only the silhouettes of the trees and animals are seen.