Comment 50 for bug 93546

The problem with most workarounds I have seen is this:

Starting a new window using the remote features does not allow you to log into
the same site twice using different credentials. What if you want to log into
phpMyAdmin for example using two different usernames? Because Mozilla shares
the session cookie between all browser windows in the same process, this is
impossible. The only solution is either use two different browsers or be forced to
use different profiles.

Frankly, every single browser besides Mozilla and clones can seem to figure this
simple issue out, so why is Mozilla's team so half ass backwards? IMHO, Firebird
is the best browser for Linux by far, but this one issue cripples it so bad that I am
usually forced to use an inferior browser just so I can have uninterrupted work.