Hello,
I lost 1 hour yesterday to find how to do that and finally I had to code it myself.
Add the following code to your functions file
/**
* Custom
* Make excerpt visible on protected posts
**/
function my_excerpt_protected( $excerpt ) {
if ( post_password_required() )
{
$post = get_post();
$excerpt=$post->post_excerpt;
}
return $excerpt;
}
add_filter( ‘the_excerpt’, ‘my_excerpt_protected’ );