Bug: Tempest / Aechor Plant Spawning in lit conditions

[SteveJDM]

What Feature Types Apply to This Bug?

Entity, System

Other Type

No response

What Type of Bug Is This?

Unexpected Behavior

Forge Version

21.1.90

The Aether II Version

1.21-0.0.1 (build 1185)

Is This Bug a Conflict With Another Mod?

No response

Client Log

No response

Crash Report (if applicable)

No response

Steps to Reproduce

In the aether, create a large spawnable platform, I cleared out a 500x500 block area. Create a layer of aether grass on the bottom-most layer y=-31, and create a layer of light blocks with light levels above 0.

What You Expect To Happen

Light levels should prevent all hostile mobs from spawning.

What Actually Happened

Cockatrice and Zyphers were prevented from spawning, however, Tempests and Aechor Plants continued to spawn.

Additional Details

https://youtu.be/hDdvwGSjfZA

Please Read and Confirm The Following

• I have confirmed this bug can be replicated without the use of Optifine.
• I have confirmed this bug is on the most recently supported version of Minecraft.
• I have confirmed the details provided in this report are concise as possible and does not contained vague information (ie. Versions are properly recorded, answers to questions are clear).
• I have confirmed this issue is unique and has not been reported already.

[Builderdog841]

Aechor Plant spawning was never bound to light levels

[SteveJDM]

tempests are still spawning in light level 15 though. they shouldn't be doing that if they're hostile mobs.