Un-intentionally hide local task menu in admin overlay

I've installed chain_menu_access module as the required module by the Path Access module, and found that all of the local task menus are hidden when the modules are enabled.

Drilling down into the code, I found that the function _chain_menu_access_callback() is called with a one-element-array as an arguments, which is the original access callback argument of the menu item, then, the code extract their required parameters at the following line:

list($old_access_callback, $new_access_callback, $count, $or, $pass_index) = array_shift($args);

The line above result that all of the parameters become invalid (i.e., extract the original access argument into pieces) and cause the function return FALSE to the caller which make the menu item blocked.

I guess that this menu item should not be passed to the function _chain_menu_access_callback(), unless they are processed by the function chain_menu_access_chain(). However, by some unknown reason, I found that the 'access callback' argument in the database is set to _chain_menu_access_callback and then make the menu item passed to the function.

My Quick and Dirty fix on this is to add the following code in front of the line above:

if ( count($args[0]) < 5 ) {
  array_unshift($args, array('user_access', 'user_access', 1, FALSE, FALSE));
  $args[] = $args[1];
}