Transmission material and a reflector cannot be active at the same time

I have a transmission material and a reflector in a scene. When the reflector is active, the refraction of the transmission material disappears.

You can see this here if you tilt the model backwards:

Here transmission always works correctly, it is the same file but i have switched off the reflector:

Is this a bug or am I doing something wrong?

What you see is a bug in older versions of three.js. Please upgrade to at least to 163 which fixed the issue. It seems you are using r157 right now.

PR that fixed the bug: WebGLRenderer: Fix transmission with nested render calls. by Mugen87 · Pull Request #27886 · mrdoob/three.js · GitHub


Thanks it works fine now.
Thanks especially for your work here in the forum. Since I’ve been working with three.js, you’ve provided the solutions to at least 10 of my tricky problems. :heart: