x-gvfs-show will do something < fill in the name of your personal diety > never intended. It will create a link on the side panel of your file manager and on the desktop if you allow that sort of thing for partitions that are not mounted under /media or $HOME.
Back in the olden days you mounted something under /mnt when you didn't want it to show up on the side panel or on the desktop. Makes no sense to put it under /mnt then add x-gvfs-show. And if you wanted to change how it displayed you changed it's LABEL.
It's made worse in Disks because it asks you if you want it to:
Show in user interface
The new user will look at that and say ... well of course I do. That's why I'm mounting it. What kind of a daft question is that? Selecting that option inserts x-gvfs-show.
I'm going to be uncharacteristically generous here and suggest that "Disks" isn't buggy it's that Mint isn't ready for it yet. Disks was written and designed to fit within the whole systemd / brave-new-world udev/udisks universe. When Mint goes to version 18 all the backend pieces will be in place to have this goofy option work.BTW, This thread is 3 years old. The OP may have gone to the dark side and is a happy MacBook user today.