[BUG] DynamicDarkness with DynamicLights enabled Hypixel SkyBlock

[iamsyne]

Description of Issue

Steps to Reproduce

1. join hypixel skyblock
2. pick nether star
3. go to farm
4. see dynamicdarkness

OptiFine Version

Release candidate OptiFine 1.21.1_HD_U_J1_pre16

Installation Method

standalone

Log Files/Crash Reports

latest.log

F3 Debug Screenshot

Prior Testing

• Does this happen in Vanilla without OptiFine?
  no

Additional Information

Smooth lightning OFF

[sp614x]

How does it look in vanilla with Smooth Lighting OFF?

[sp614x]

Vanilla has the same problem with farmland on Hypixel when Smooth Lighting is OFF:

[sp614x]

Looks like Hypixel is sending to the client chunks with invalid lighting data.
When the chunk is changed (placing/breaking a block) the lighting is recomputed on the client side and the bug disappears.
After a reconnect Hypixel sends again the chunk with invalid lighting.
Tested with vanilla 1.21.1 and Smooth Lighting OFF to see the raw light values.
Older MC versions (1.19.4) behave identically.