Candles become invisible and don't render properly when placed in front of banners.

Steps to Reproduce: 

1. Place a candle/s on a block.
2. Place any banner behind it.
3. Observe from the front.
4. Light the candle and observe again.

Expected results:

Candles are properly visible from all angles.

Observed result;

Candle body disappears when seen from the front with a banner behind. If lit, only the flame is visible.