Torches and lanterns float above walls

^{Update by} @unknown^:
Summary:
Torches and lanterns float above walls, instead of making pillars below for support.

Steps to Reproduce:

1. Place a section of walls, both one block high and two or more blocks high

2. Place torches and lanterns above the walls

Observed Results:
The torches / lanterns placed on the walls do not create support pillars; they float above instead.

Expected Results:
They should create support pillars, just as they did in previous versions.

Screenshots/Videos attached: Yes

Notes:

Original Description: