Surface light makes the grass glow when LightingStyle is set to Realistic

Bug Reports Engine Bugs
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1

My map is just a grass block with a surface light applied to the baseplate, poiting to the top.
When LightingStyle is set to Realistic, the grass glows in a certain radius from the center of the map. This radius depends on my graphics quality level.
It started happening in Studio a while ago and now seems to happen in Roblox too.
I haven’t found a workaround to this issue and would love to keep my map and lighting the way they are ;/

2

Salutations!

Thanks for bringing this to our attention.
A ticket was filed, and we’ll start investigating.

Seems that some information is missing from your report.
Please provide a log, a Repro Placefile, and your hardware specifications so we can be able to investigate it right away!

If you need assistance or info on which info/files would be relevant to investigate this topic or how to get them, please refer to the How to post a Bug Report - Bug Reports - Developer Forum | Roblox

Thanks for understanding!
Have A Nice Day!

3

Sure !

Repro placefile
GlowingGrass.rbxl (56.4 KB)

Log
https://devforum.roblox.com/t/log-file-for-glass-glowing-bug/3799567

Hardware specifications
https://devforum.roblox.com/t/log-file-for-glass-glowing-bug/3799567/2?u=zashscripts

4

Hey Zash,

Thanks for the repro - super helpful!
We’ll let you know when we have an update :slight_smile:

Best,
M0bsterLobster

5

Hi @ZashScripts, the excessive grass glow on Realistic LightingStyle has been fixed since December 2025. Thanks for the report!