Odd acting login and logout

That behavior usually indicates you have browser caching enabled somewhere. The System - Cache (or System - Page Cache) plugin has an option to enable Browser Caching. It should always be disabled on sites that allow authentication.

Other optimization extensions can have the same feature, so if you're using something else to try and speed up your site, look there.

I hope that helps, but if you need anything else, just let me know.

Thanks,
Alex

Unfortunately, no, I don't have any other suggestions. Our SCLogin module uses the underlying Joomla authentication system if you're entering your username and password on that screen. So, if you're having issues with standard Joomla credentials, that means it's an issue with Joomla or another plugin (not the SCLogin module or JFBConnect). If the issue only happened with social authentication, that would be a different story, but I don't think that's the case.

The only other recommendation I can give is to check your .htaccess file. There are some directives in that file that can enable browser caching. If you didn't create that file yourself and had some automated tool do it, that could be the cause. You may want to try and get the original htaccess.txt file that ships with Joomla and try that, temporarily, to see if the issue goes away.

I hope that helps,
Alex

Glad you got this resolved. Let us know if you run into any further issues.

-Melissa