Maya Arnold lighting/bump bug

[Anonymous]

These two images are from the exact same scene, with the exact same lighting setup. 

From one day to another it changed the way it rendered the image. 

I am using aiStandardSurface. My bump map color space is on Raw and the Alpha is Luminance check is enabled. 

Please help me solve this weird Maya/Arnold bug.

Thank you!

[mspeer]

Hi!

This could be a problem related to render, material or lighting settings, it looks like something is clamped or disabled.

No chance to say what's wrong without a scene-file.