wp_nav_menu shows wrong menu when menu_id is set

[larsemil]

I have a site that is/was running 3.5.1.

It had the following code:

    <?php wp_nav_menu( 
    array(
        'menu' => 'Medical Category Menu',
        'menu_class' => 'row-fluid Product main_s_cat',
        'items_wrap'  => '<ul id="%1$s" class="row-fluid Product main_s_cat">%3$s</ul>', 
        'menu_id' => 'main_cat_menu',
        )); ?>

After upgrading to 4.0 the wrong menu was shown.
Removing the line with menu_id shows the correct menu.

Steps to reproduce(sorry for formating. i did not get it right. [Correct here]

// how to replicate:
// 1. Create at least two menus
// 2. Add code below to functions.php or use wp_nav_menu in theme file.

add_action('loop_end', function(){
 wp_nav_menu(array(
  'menu' => 46, // make sure its an menu id that exist
  'menu_class' => 'row-fluid Product main_s_cat',
  'items_wrap'  => '<ul id="%1$s" class="row-fluid Product main_s_cat">%3$s</ul>',
  'menu_id' => 'main_cat_menu', //with this line in place, correct menu is NOT shown. Remove it, and correct menu is shown...
 ));                                                                                   
});

I included the add_action as an easy way to test if not editing theme files... its the same if added directly into theme.

[briandichiara]

Tested with 2 menus and 3 menus, passing each menu ID into the 'menu' parameter and was unable to reproduce this bug. Each menu ID displayed the correct menu, with our without the 'menu_id' parameter in place. Please provide additional information in order to reproduce.

[helen]

No reporter feedback - please reopen with more detailed steps to reproduce if it's still an issue.