Redirect loop on custom node/[nid]/mypath

I create own node/[nid]/mypath view hook_form.
After enable this module the my-node-alias/mypath cause infinite redirect loop.

The menu_get_item();

array
(
    [path] => node/%/what-to-see
    [load_functions] => Array
        (
            [1] => node_load
        )

    [to_arg_functions] => 
    [access_callback] => field_group_menu_access
    [access_arguments] => a:2:{i:0;s:4:"view";i:1;i:1;}
    [page_callback] => fieldgroup_menu_page_view
    [page_arguments] => Array
        (
            [0] => stdClass Object
--------
        )

    [delivery_callback] => 
    [fit] => 5
    [number_parts] => 3
    [context] => 0
    [tab_parent] => 
    [tab_root] => node/%/what-to-see
    [title] => What to do
    [title_callback] => t
    [title_arguments] => 
    [theme_callback] => 
    [theme_arguments] => Array
        (
        )

    [type] => 6
    [description] => 
    [position] => 
    [weight] => 9
    [include_file] => 
    [href] => node/221/what-to-see
    [tab_root_href] => node/221/what-to-see
    [tab_parent_href] => 
    [options] => Array
        (
        )

    [access] => 1
    [localized_options] => Array
        (
        )

    [original_map] => Array
        (
            [0] => node
            [1] => 221
            [2] => what-to-see
        )

    [map] => Array
        (
            [0] => node
            [1] => stdClass Object
              (
---------------------
              )
            [2] => what-to-see
        )
)