Cauldrons are dark by default

Steps to Reproduce:

1. Set brightness to 0, in order to make it easier to notice;
2. Place a cauldron.

Observed Results:
Its texture is dark, even when exposed to the Sun light. It can be brightened with block lights.

Expected Results:
The brightness of it is affected by sky light.

Screenshots/Videos attached: Yes

Notes: Even though the compound creator uses a similar model, it isn't affected by this bug.