Strange issue with new worldheight at y-18 (and y-50) breaking the lighting

[ghost]

Describe the bug
When at y -18, the held item producing light stops following the player. It works on any levels other than this one.

To Reproduce
Steps to reproduce the behavior:

1. Enter a world (1.18 snapshots or 1.17 experimental datapack)
2. Go to y-18
3. Hold a lightsource
4. The lightsource won't follow you

Expected behavior
The lightsource should be following the player

Screenshots

Desktop (please complete the following information):

• OS: Windows
• Minecraft 1.17.1
• Fabric Loader version 0.11.6
• Mods fabric-api-0.37.1+1.17, lambdynamiclights-2.0.1+1.17
• Version 2.0.1
• Branch 1.17