wp_login_form + is_user_logged_in don't work anymore

[Dukessa]

I haven't debugged this enough to give you more precise details, however, all frontend login forms (except on standard wp-login.php) output through wp_login_form, do not work anymore, right after upgrade to 3.3

Moreover, correctly logged in user, still isn't recognized, nor with cookies, not by is_user_logged_in

Basic tests have been performed such as flushing cache and cookies, on different browsers and disabling plugins. No difference.

Same issue with:

$current_user = wp_get_current_user();
if ( 0 == $current_user->ID ) {
    // Not logged in.
} else {
    // Logged in.
}

Are we missing important documentation here, or is it really a bug?

Can't reproduce either issue on 3.3 with Twenty Eleven and the 'wp_head' action hook. Does it still occur with the Twenty Eleven theme?

wp_get_current_user() is working fine for me.

wp_get_current_user() and get_currentuserinfo() can both be plugged, is it possible you are using a plugin that is over riding the default functions and breaking them?

Can you deactivate all plugins in your testing and still reproduce?

No feedback in 12 months.

Feel free to reopen with more information if there's still a problem.