MeshTransmissionMaterial Feedback loop in react-three/[email protected]

[alecmolloy]

• three version: 0.171.0
• @react-three/fiber version: 9.0.0-rc.1
• @react-three/drei version: 9.120.3
• node version: 20.9.0
• npm (or yarn) version: 10.9.0

Problem description:

Using the base <MeshTransmissionMaterial /> in any scene I've tried results in:
WebGL: INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. However, I have not been able to see any issues with the output.

Relevant code:

Codesandbox with minimal reproduction.
Production example with error, yet no visual or performance issues [relevant code] [package.json]

Suggested solution:

All I can offer here is that dropping the drei version down doesn't seem to fix it, but updating to React 19 / R3F v9 does the trick.