Issue with saving EXR without Alpha


I know this could be posted in another forum, but as this might end up as a bug repor I check the issue here first. (Blender 2.93.1)

Looks like saving EXR files without alpha channel (RGB only) from compositor ends up saving alpha anyway. I only need RGB for layers, as alpha will be saved in its own layer and no need to save multiple times. And I have a special pipeline need to get rid of alphas.

Has anyone else encountered this problem or am I making a mistake somewhere? Or maybe someone knows the correct way to save RGB only.

Attached is an image to display FileOut settings and alpha channel displayed as an example for 2 layers in DJV, which shows that there is saved data in that channel. Utility passes are RGB for pipeline reasons if anyone wonders about data types in compositor screenshot.