i guess facets doesn't care whatever sort order you specify in the registry but only what you put into preferences > media library > facets > default sorting order
I understand what you want Facets to do, but I'm curious to know why you want it to. Perhaps there's another way to do what you're ultimately trying to achieve, but we'd need to know what that is to help you.I wouldn't call this a bug. Sorting is defined in foobar in more than one place, and some components have the capability to define a sort. I'd assume that if a sort were left undefined, it would default to a sort defined by the component's developer or it would inherit a sort defined in foobar.
That Group/Local Policy setting obviously only applies to Explorer itself, not any applications that use the relevant Win32 function for string comparison when sorting.