Feedback Lens Flares affect overlay cameras and have no culling layer option

It doesn't seem that there's any way to exclude lens flares from a camera as long as post processing is enabled which makes them incompatible with most things you'd want an overlay camera for, I suppose.

A simple culling option could work, but as lens flares seem to be a type of post processing maybe they could benefit from having their own customizable volume override.

 

The only solutions I found was to disable post-processing on the overlay camera, or "hide the sun" with a renderer that doesn't cast shadows but has properly set culling masks.