I'm not sure if this is a new issue with this build (I am using 3.20.03), but for some reason I am not able to have the refraction of my materials affect the alpha channel. I have a view looking off a balcony with a glass railing. On the other side of the railing are some shrubs. I would like to replace the background post render, and the only way I can do that is to set the object's alpha contribution to 0.0. But then I don't have any reflections when I save a PNG. I have the material set to colors + alpha on the effect channels of the refraction, but it is not working like it has in the past.
Any ideas?
Any ideas?
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