Hi! After the 3.0 release, we plan on switching to GtkNativeFileChooser which would use your OS’s standard file viewer rather than the custom one we have in GIMP. This will require some coding changes so it’s not an easy project, but it’s on our radar.
You can follow the discussion and eventual work here: FileChooser file picker dialog must be done through portals for sandboxing and native features
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