Rhino 6 : rendering mode is error with glass material

hello,

Anyone can help this issue. when I use glass material in rendering mode. It always see-through behind next surface like in this picture

Thank you

Hi - please post a simple 3dm file that shows this behavior.
-wim

I am sending you attached file of this problem. hope you can help :slight_smile:

Thank youIssue [glass].3dm (10.7 MB)