Почему не работает cross-domain HTTP OPTIONS запросы?

# with AJAX withCredentials=false (cookies NOT sent)
Header always set Access-Control-Allow-Origin "*"
Header always set Access-Control-Allow-Methods "POST, GET, PUT, OPTIONS, PATCH, DELETE"
Header always set Access-Control-Allow-Headers "X-Accept-Charset,X-Accept,Content-Type,Accept-Language,Accept-Charset,X-Request-With,Content-Length,Accept,Origin"

RewriteEngine On

RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule ^(.*)$ $1 [R=200,L]
#RewriteRule ^(.*)$ $1 [R=200,L,E=HTTP_ORIGIN:%{HTTP:ORIGIN}]

RewriteBase /
RewriteCond  %{REQUEST_FILENAME} !-f
RewriteCond  %{REQUEST_FILENAME} !-d
RewriteRule  ^(.*)$ index.php?customUrl=$1 [QSA,L]

'use strict';

(function () {

    function imageFun ($resource)
    {
        return $resource('http://5to5admin:8888/images/:id.json', { id: '@id' }, {
            'query': {
                url: 'http://5to5admin:8888/images/?from=:start&limit=:limit',
                method:'GET',
                params: {
                    start: '@start',
                    limit: '@limit'
                },
                isArray: true
            },
            'delete': {
                url: 'http://5to5admin:8888/images/:id',
                method:'DELETE',
                params: {
                    id: '@id'
                }
            }
        });
    }

    angular.module('ftfAdminPanel.images')
        .factory('Image', [ '$resource', imageFun ]);

})();