Found the source of the issue. Previously, xfce was not did not use gvfs-info for mimetype detection. This changed in this commit:
http://cgit.freedesktop.org/xdg/xdg- utils/commit/?id=8392f94bbc640e4e69aae706d33a9e4a2f364f26 Relevant code: http://cgit.freedesktop.org/xdg/xdg-utils/tree/scripts /xdg-mime.in?id=5336e0a26dbd1e7cb00a8c05678fef039ba2c3db#n76 Before xfce used info_generic, which performs the mimetype lookup with the mimetype command instead of gvfs-info. On a newly created plaintext file: $ mimetype --brief --dereference test text/plain $ gvfs-info test 2> /dev/null | grep standard::content-type | cut -d' ' -f4 application/octet-stream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1497170 Title: New file creation - not opening with file editor To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1497170/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs