After update of a fresh WP 3.3.2 / BP 1.5.5 installation to 3.4 and 1.5.6 I got back that white space in the dashboard (25px high). With 1.5.5 I was able to get rid off with…
php function remove_admin_bar_white_space() {
echo 'body.admin-bar #wpcontent, body.admin-bar #adminmenu { padding-top: 0px !important; }';
}
add_filter('admin_head','remove_admin_bar_white_space');
…what is no longer working.
To use define( 'BP_USE_WP_ADMIN_BAR', true );
isn’t an option for me – I’m using the Salutation theme and that setting would screw up the frontend admin bar.