Thunar is great, however it does no good here. Your various programs like GIMP will always use the Gnome/GTK file picker because that's what they've been programmed to do. Or, if not based on GTK they will use whatever other file picker their toolkit provided.
> Your various programs like GIMP will always use the Gnome/GTK file picker because that's what they've been programmed to do. Or, if not based on GTK they will use whatever other file picker their toolkit provided.
Well, not really. Anymore.
Recently (give or take few years), toolkits and applications started to use desktop portal - mainly as a preparation for sandboxing (i.e. putting the app inside flatpak & co). The application, optionally inside sandbox, doesn't use the framework's common dialog - because that would not give it access to files outside sandbox - but talks to the desktop provided one via dbus.
That desktop provided one does not have to be implemented by the framework that the application uses. It is implemented by the DE that the user chooses.
Thunar is to Dolphin what a slingshot is to an M16. I never understood how people settle for such barebones file managers (i.e., less featureful than Windows Explorer).
