XFCE single-click

[R0CKH0PP3R]

Version 1.15.1 (Manjaro stable).
It appears as though xdg-desktop-portal-gtk doesn't follow either xfce4-desktop or thunar single-click preferences. Quite a few applications seem to use xdg-desktop-portal-gtk outside of flatpak (firefox & brave, for example), so this is a frequent interaction. If I'm simply missing a configuration option to enable single-click then I'd sure appreciate a point in the right direction as Google returns nothing but noise and I see nothing relevant in xsettings. If it's double-click by design, then please consider this a feature request to provide additional consistency, either by following xfce-desktop (for example) or by providing a configuration option.
Thank you.

[TingPing]

This uses the normal GTK3 file chooser. I guess it would be a setting in gtk's settings.ini.

Actually I don’t see a setting for it there. Do other plain gtk3 apps work?

[R0CKH0PP3R]

Thanks for your reply. I couldn't find anything either. Now you mention it, other GTK apps do not appear to work either.

[TingPing]

I guess the “right” solution is someone making xdg-desktop-portal-xfce with their design choices.