Noticed the same thing tonight. I used the usb startup disk creator last night, which apparently mounted the iso image via loop0, and it is still showing in my computer in nautilus despite the fact that /dev/loop0 no longer exists, and I have even deleted the iso file.
I even killed udisks-daemon and restared it so it does not show up in udisks --dump, but it's still showing in nautilus.
Noticed the same thing tonight. I used the usb startup disk creator last night, which apparently mounted the iso image via loop0, and it is still showing in my computer in nautilus despite the fact that /dev/loop0 no longer exists, and I have even deleted the iso file.
I even killed udisks-daemon and restared it so it does not show up in udisks --dump, but it's still showing in nautilus.