Bug: Routing group filter not working on nested or complex routes

[Spreizu]

Example routes, where filter is not being applied:

Nested:
$routes->group('{locale}', function($routes) { $routes->group('admin', ['filter' => 'require-admin'], function($routes) { $routes->get('/', 'AdminDashboard::index'); }); });

Not nested, but more complex group:
$routes->group('en/admin', ['filter' => 'require-admin'], function($routes) { $routes->get('/', 'AdminDashboard::index'); });

If group is simple (containing only admin), then filter is working.

[aretan]

Me too:

GET /api/v1/first/100/second

404 - File Not Found
Controller method is not found: 100

$routes->group('api/v1', ['namespace' => 'App\API\v1'], function($routes)
{
    $routes->group('first/(:any)', ['namespace' => 'App\API\v1'], function($routes)
    {
        $routes->resource('second');
    });
    $routes->resource('first');
});

$ php ./vendor/codeigniter4/framework/spark routes


CodeIgniter CLI Tool - Version 4.0.0-rc.3 - Server-Time: 2019-11-10 02:31:45am

+------------------------------------+--------+------------------------------------------------+
| Route                              | Method | Command                                        |
+------------------------------------+--------+------------------------------------------------+
| api/v1/first/(.*)/second           | get    | \App\API\v1\Second::index                      |
| api/v1/first/(.*)/second/new       | get    | \App\API\v1\Second::new                        |
| api/v1/first/(.*)/second/(.*)/edit | get    | \App\API\v1\Second::edit/$1                    |
| api/v1/first/(.*)/second/(.*)      | get    | \App\API\v1\Second::show/$1                    |
| api/v1/first                       | get    | \App\API\v1\First::index                       |
| api/v1/first/new                   | get    | \App\API\v1\First::new                         |
| api/v1/first/(.*)/edit             | get    | \App\API\v1\First::edit/$1                     |
| api/v1/first/(.*)                  | get    | \App\API\v1\First::show/$1                     |

[aretan]

this problem can resolve by line:

$routes->setAutoRoute(false);

[Spreizu]

I have done further testing and can add, that this problem occurrs when {locale} is specified as group name. If, for example, I replace '{locale}' with 'test', then the filter is working.
Is believe this is a bug.