There is also a cube with a metallic texture that reflects the lights of the cube, image below:
But as you can see in this image, the surfaces that should reflect the light coming from behind and above the camera, don't reflect. I imagine there's some culling happening. Is there any way to circumvent this or to force eevee to render these reflections?
I have tried Irradiance Volume + Indirect Lighting Baking.
Cycles does it fine, just doesn't look half as good, and takes a billion years to render.