Bug? CI 4 not remove method from params when use routes ?

Url: site[.]com/p/seo-url/param1/param2/...

app/Config/Routes.php 

PHP Code:

$routes->add('p/(:any)', 'Post::index'); 


app/Controllers/BaseController.php

PHP Code:

public function _remap($method, ...$params) {
    if ( method_exists($this, $method) ) {
        return $this->{$method}(...$params);
    } elseif ( method_exists($this, 'index') ) {
        return $this->index(...$params);
    } throw \CodeIgniter\Exceptions\PageNotFoundException::forPageNotFound();
} 


In CI 3 it works perfect but in CI 4 i have some problems...

In CI3 $method from _remap is seo-url => the second element from uri_string
In CI4 $method from _remap is index => the method from routes

In CI3 $params from _remap is [param1, param2]
In CI4 $params from _remap is []

If i use this $routes->add('p/(:any)', 'Post::index/$1'); i recive this params [index, param1, param2] in _remap
The method index is not removed from params when use this $routes->add('p/(:any)', 'Post::index/$1');

How can i receive parameters without method in _remap when use routes ?

I think this is a bug in CI 4 because:
$routes->add('p/(:any)', 'Post::index');
This url ( site[.]com/p/seo-url/param1/param2/ ) will return this parameters [seo-url, param1, param2] => here the first element from parameters is the method
This url ( site[.]com/post/seo-url/param1/param2/ ) will return this parameters [param1, param2] => here the method is removed from parameters

In CI 3 i use this _remap in MY_Controller and work perfectly for my app.

PHP Code:

public function _remap($method, $params = array()) {
        if ( method_exists($this, $method) ) {
            return call_user_func_array(array($this, $method), $params);
        } elseif ( method_exists($this, 'index') ) {
            $this->router->method = 'index';
            $this->router->uri->rsegments[2] = 'index';
            return call_user_func_array(array($this, 'index'), $params);
        } else {
            show_404();
        }
    } 


For some days i try to find a good solution for this _remap in CI 4 for migrate my app to ci 4. 

Original url: site[.]com/post/seo-url/param1/param2

$routes->add('p(/.*)?', 'Post::index');
$routes->add('post(/.*)?', '404');

After route: site[.]com/p/seo-url/param1/param2
But in CI4 i received empty params after use this route in _remap
In CI3 i received params without method and folders in _remap

I need receive params without method and folders in CI 4 _remap.

Can someone help me please ? Thank you!

This is my solution for CI 4. If someone have a good idea please tell me.

PHP Code:

public function _remap($method, ...$params) {
        
        $router = service('router');
        
        $directory = trim(strtolower((string) $router->directory()), '/');
        $directory = explode('/', $directory);
        
        $segments = (array) $this->request->uri->getSegments();
        
        if ( !empty($directory) ) {
            
            $segments = array_udiff($segments, $directory, 'strcasecmp');
            
        }
        
        $segments = array_values($segments);
        array_unshift($segments, NULL);
        unset($segments[0]);
        
        $controller = $segments[1] ?? '';
        $method = $segments[2] ?? '';
        
        $params = array_slice($segments, 2);
        array_unshift($params, NULL);
        unset($params[0]);
            
        if ( method_exists($this, $method) ) {
            return $this->{$method}(...$params);
        } elseif ( method_exists($this, 'index') ) {
            return $this->index(...$params);
        } throw \CodeIgniter\Exceptions\PageNotFoundException::forPageNotFound();
        
    }