Hi Chris, To elaborate more on what I am trying to say. The use of option '--fake' whether '--no-mtab' is present or not done by root will not affect '/usr/mtab', however, missing '--no-mtab' changes '/run/mount/utab' and causes a 'umount failed: Operation not permitted' when umount by a original user. This is rather unexpected since '--fake' should be a simulation but changes something.
This could be just a documentation issue and it is not my intent to reopen the issue. Just pointing it out in case it happens to be an overlooked actual bug. Sincerely, Simon