We hate bugs. Especially on Sundays
Seriously though, that was a sort of nasty one since it had 'bad' behavior for the end user. We really hope it didn't trouble you too much, and appreciate you pointing it out. The multi-profile stuff was just added in the 3.4.0 release, so it's still a bit new to us. We tested registrations a thousand different ways, but obviously missed testing the multi-profile logic during simple logging in.. we'll be updating our automated tests accordingly to avoid this mistake in the future.
Definitely keep us posted if you run into any other issues. Finally, after you've played with JFBConnect for a bit, please consider leaving a rating and review on the JED for the extension and/or our support. It's certainly not required, but helps us out a lot and is very appreciated:
extensions.joomla.org/extensions/social-...ook-integration/7215
Thanks, and good luck,
Alex