When formatting a usb drive from the context menu in the nautilus sidebar, the formatting dialog provided by gnome-disk-utility appears correctly, but when you go ahead an click 'Format', the application exits before ever starting to format the drive.
This is fixed in https://git.gnome.org/browse/gnome-disk-utility/commit/?id=0eb951641aae2740fac8565852ea2291d1007f22
Verified, it's fixed in: gnome-disk-utility-3.8.2-5.el7
This request was resolved in Red Hat Enterprise Linux 7.0.
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