Z & Mist pass problems with transparency & motion blur.

Hi everybody,

I would love to see Blender being used more and more in the professional world.

But, Cycles has a problem with the Z and Mist pass when using alphas in shader or motion blur.

What makes its use difficult in production.

Here are some topics that already exist : reddit.com/r/blender/comments/edbrca/problem_with_white_alpha_pixelation_and_noise/ devtalk.blender.org/t/is-this-a-bug-weird-noise-in-the-mist-pass-also-on-zdepth-pass/9209 blender.stackexchange.com/questions/158815/white-noise-in-blender-z-pass-with-alpha-value-in-mix-shader

So my question is : are the developers aware of this issue?

Maybe it's already fixed or in the process of being fixed?

Anyone have any information on this?

I know there are very impractical solutions to recreate a Z pass but that's beside the point because it is impractical on very large stages.