How can I make a popover stay visible when my Catalyst app loses focus?

I have a Catalyst app that uses popovers frequently, and I'd love to have them stay active when the app loses focus. It appears this is controlled in a native AppKit app via NSPopover.Behavior. Is this functionality exposed somewhere in Catalyst?

FB16114803

How can I make a popover stay visible when my Catalyst app loses focus?
 
 
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