composer only affects the files inside the vendor folder. It also uses the composer.json and composer.lock files. composer doesn't maintain your application files.

Make sure you have committed your kernel file to the source control tool (git), and successfully pulled on the server.

Please close the issue when you resolve it.

In this project i dont use git. And composer install run a artisan command after finish the installtion (i think this comes from the composer dependencies). This reset effect occurs when i delete the vendor folder in my project folder and run composer install. After the installtion is the kernel.php resetted

my composer.json

https://paste.laravel.io/08718b0a-6e25-4cd9-9cd4-3bcfb6b071d6