Strange reflection with LUMEN


Hi,
i found a strange behaviour in lumen reflection, but maybe i am doing something wrong because i am really a noob with Unreal Engine… The scene is a simple closed ambient with skylight and directional light. Used Lumen for GI and reflection, no hardware raytracing. As you can see, the sky is reflected on sphere as the walls behind the camera are transparent. When i move camera backward near the back wall, the sky on the reflection disappear, but not completely. When i move near the sphere i see a lot of sky.

Some suggestion? Thanks :slightly_smiling_face:

I’m having the same issue :neutral_face:

Make sure the cubes are static meshes with mesh distance fields enabled. Check the Lumen debug view under lit and make sure the walls are showing up. Also make sure they are at the very least 10 cm thick, preferably at least 20 cm.