In UE5.7, objects using subsurface scattering or two-sided foliage materials display a red color in reflections such as glass, indicating abnormal reflection. What could be the cause, and how can this be troubleshooted and resolved? [ef59ac21-151e-4119-ac4d-979c83ba1f3f]

Hi guys, I found a workaround. Turning off Substrate fixes broken material reflections.This bug is probably caused by one of its parameters. Hope Epic notices and fixes it soon. [Snipaste_2026-04-23_22-25-03]

I am having the exact same issue. Did you find the solution or maybe just a reason why this is happening?

Hello there! Indeed, that red color shows an issue on how reflection is being handled, most likely due a conflict with the material in use, and how Lumen/Ray Tracing are hitting the lights. Checking around the community, one solution is to change how Lumen rays interact with the mesh surface. Open…

Hello, thank you very much for your prompt reply. I am experiencing exactly the same problem.I tested the method you suggested, but when using ray lighting modes in Post Process, both HitLight and Hit Lighting for Reflections cause red artifacts in reflections. There also appears to be abnormal emi…

ue5.7 subsurface and two sided foliage reflection issues

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radio22 (radio22) April 24, 2026, 9:04am 7

THANKS!! I WILL TRY

Foliage Appears Reddish in Glass and Mirror Reflections