Zebra Stripes on Edge of Glass with Higher Ray Bounce Number

[jiyang1018]

This scene has only 1 piece of trangle glass with [glass (solid) white], 3 tilted panel environment.
This banding issue appears in almost all environment. I can reduce ray bounce to 2, and all banding will disappear, but I can no longer see the object behind glass.

BTW, My rendering requires 8 bounces at least to show every object.