$routes->match() behavior in 4.4.1

Code:
use CodeIgniter\Router\RouteCollection;

use App\Controllers\zAdmin;



$routes->setTranslateURIDashes(false);

$routes->set404Override();



$routes->get( '/', [zAdmin::class, 'index'] );



$routes->group( 'zadmin', static function( $routes ) {

    $routes->match( ['get','post'], 'fetchinfo', [zAdmin::class, 'ajax_fetch'] );

    $routes->match( ['get','post'], 'fetchrepoinfo', [zAdmin::class, 'ajax_fetch_repo'] );

    $routes->match( ['get','post'], 'fetchzampnews', [zAdmin::class, 'ajax_fetch_zamp_news'] );

    $routes->match( ['get','post'], 'tagzampnews', [zAdmin::class, 'ajax_tag_zamp_news'] );

    $routes->match( ['get'], 'zamprepo', [zAdmin::class, 'zamprepo'] );

    $routes->match( ['get'], 'zampnews', [zAdmin::class, 'zampnews'] );

    $routes->match( ['get', 'post'], 'create', [zAdmin::class, 'edit'] );

    $routes->match( ['get', 'post'], 'edit/(:segment)', [zAdmin::class, 'edit'] );

    $routes->match( ['get'], '(:segment)', [zAdmin::class, 'view'] );

    $routes->get( '/', [zAdmin::class, 'index'] );

});



"Home" work, i.e. no parameters at all, but anything other than that yields a 404 with messages like "Can't find a route for 'get: 2'" (which I think should have been triggered on the second to last match(). I'm obviously doing something wrong, I just don't know what?