Could someone having the issue report it upstream on
https://gitlab.gnome.org/GNOME/gnome-disk-utility/issues ?
** Changed in: gnome-disk-utility (Ubuntu)
Importance: Undecided => Low
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This bug is still valid in Ubuntu 20.04.
The utility creates the loopback device OK, but the mount sometimes
works and sometimes silently fails. This utility has no debug or
verbosity option, so there's no way for the end user to give useful
information about the failure. That's something that
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-disk-utility (Ubuntu)
Status: New => Confirmed
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