That is the GtkFileChooser dialog window which is not managed by Xfce. If you want to open an upstream report, please head over to https://gitlab.gnome.org/GNOME/gtk .
Other than that, you can reveal hidden files by pressing Ctrl + h. ** Changed in: xfdesktop4 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1735431 Title: Not possible to navigate into hidden directories with file selector dialog box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfdesktop4/+bug/1735431/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs