Dusk L55 headaches with database test

I'm new on Dusk

Well, configure using doc and tutorials

On my local development create a .env.dusk.local (I verified that app is on local environment with dd($this->app->environment())

.env.dusk.local

DB_CONNECTION=mysql_tests
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=lowino_tests
DB_USERNAME=myname
DB_PASSWORD=mypassword

DB_DATABASE_TESTS=lowino_tests

in phpunit.xml

<php>
        <env name="APP_ENV" value="testing"/>
        <env name="CACHE_DRIVER" value="array"/>
        <env name="SESSION_DRIVER" value="array"/>
        <env name="QUEUE_DRIVER" value="sync"/>
        <env name="DB_CONNECTION" value="mysql_tests"/>
    </php>

in config/database.php

'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],

        'mysql_tests' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', 'localhost'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE_TESTS', 'lowino_tests'),
            'username' => env('MYSQL_USER', env('DB_USERNAME', 'forge')),
            'password' => env('MYSQL_PASSWORD', env('DB_PASSWORD', '')),
            'charset' => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],

in tests/Browser/RegisterTest.php

<?php

namespace Tests\Browser;

use Tests\DuskTestCase;
use Laravel\Dusk\Browser;
use Illuminate\Foundation\Testing\DatabaseTransactions;

class RegisterTest extends DuskTestCase
{
    use DatabaseTransactions;

    /**
     * @group user
     * @test
     */
    function user_can_register()
    {
        //dd($this->app->environment());
        //dd(env('DB_DATABASE'));
        $this->browse(function ($browser) {
            $browser->visit('/') //Go to the homepage
            ->clickLink('Register') //Click the Register link
            ->assertSee('Register') //Make sure the phrase in the argument is on the page
            //Fill the form with these values
            ->value('#name', 'Joe')
            ->value('#email', '[email protected]')
            ->value('#password', '123456')
            ->value('#password-confirm', '123456')
            ->click('button[type="submit"]') //Click the submit button on the page
            ->assertPathIs('/home') //Make sure you are in the home page
            //Make sure you see the phrase in the argument
            ->assertSee("You are logged in!");
        });

        // Make sure database has data
        //
       // ->assertDatabaseHas('users', ['name' => 'Joe']);
        // Ver en la BD ??
    }

First problem:

After run first test dusk --group=useron my database lowino (not test database, it's normal database) a new user Joe is created, instead on lowino_tests. Also I'm using use DatabaseTransactions

Why Dusk not uses lowino_tests and why not uses transactions?

What is wrong?