PHPstorm does not apply namespaces and classes in subfolders correctly

Requirements

1. PHPstorm 2022.2.3
2. Docker

HowTo

1. Go to subfolder /releasetool/www/lib/YouTrackApi and execute generate.sh
2. check www/youtracktest.php for PHPstorm code analyzing
3. Merge generated /releasetool/www/lib/YouTrackApi/composer.json into /releasetool/www/composer.json --> I provide a merged file @folder /subproject1
4. create dev environment docker build -t cnconsult/releasetool .
5. modify start-docker.sh depending on your personal folder structure (The author was using ~/Development to clone projects here)
6. execute start-docker.sh
7. Open Shell in container: docker exec -it releasetoolCopy /bin/bash
8. execute composer install
9. check again youtracktest.php

use OpenAPI\Client\Configuration; --> OK

use OpenAPI\Client\Api\DefaultApi; --> NotOK