The bug

The hanging lantern model contains a face which cannot normally be seen: this face is the bottom of the uppermost cuboid. This face is not present on non-hanging lanterns.

How to reproduce

1. Place a lantern under a block
2. Enter Spectator mode
3. Fly into the lantern

Expected results

There would be no bottom face for the upper cuboid that connects to the chain.

Actual results

There is.

How to fix

Very easy to fix - just delete line 21 from template_hanging_lantern.json. The resource pack attached to this ticket fixes this.