[4.2.0.55] Mix Shader - infinity calculations (bug?)

[RGhost77]

Hello!
Can someone confirm this bug:
1. Create Mix Shader and two Standard Surface shader
2. Change Transmission to 1.0 in both Strandard Surface shaders
3. Connect one Standard Surface to shader1 input of Mix Shader
4. Connect another Standard Surface to shader2 input of Mix Shader

In my case 3ds Max (2021.2) hangs with 100% CPU usage , after 3-4 minutes Windows crash too.
In previous MAXtoA such shader tree works well.

[Stephen.Blair · Accepted solution]

Confirmed. I'll log it...