Describe the Bug:
When I put a Smooth Glowstone Slab on the ground, it doesn't emit any light, although the whole block gives off good light.

Expected Behavior:
I thought I could use the slabs as a light source for platforms composed of slabs.

Screenshots:
Screenshot 1

Version Information:

• Operating System: Windows 10 21H1 (19043.1348)
• Mod Version: 2.3.2-beta.1
• Minecraft Version: 1.17.1
• Forge Version: 37.0.108

This is due to vanilla's lighting system and therefore there is nothing we can do about this.