I am testing the program and I noticed this problem.
I saw some posts with this same problem, but so far I haven’t seen a solution for it.
I have the program in version 1.7.1
I need to render this scene with a lot of glass. I like the quality of the image, but this problem makes use unviable.
Multi-reflection is only available in image output, which means there is no multi-reflection effect in the real-time mode. Video rendering does not support multi-reflection at the moment, which will be optimized in the following updates.
Note: Multiple reflections are available between metal and mirror, while not supported between glass and glass.