Comment 50 for bug 31746

Mozilla developers have marked the upstream bug as won't fix without pointing to the supposed "duplicate".

The fact still remains, there is an option called -no-remote which is supposed to allow a user to run two profiles. This does not work. If this is not a feature, take it out of the help/man. But since it is a possible feature, it would be preferred that it be fixed.

Firefox options
...
        -no-remote Open new instance, not a new window in running instance.