php70 refactor results in fatal error with equal named classes (but different namespace)

[clxmstaab]

Subject	Details
Rector version	v0.5.20 (invoke vendor/bin/rector --version)
PHP version	PHP 7.2.9 (invoke php -v)
Full Command	rector process lib --set php70

Current Behaviour

Minimal PHP Code Causing Issue

leads to

Fatal error:  Cannot declare class portable\crossSelling\Warenkorb because the name is already in use in /home/runner/work/php-clxmobilenet-portable/php-clxmobilenet-portable/lib/portable/crossSelling/Warenkorb.php on line 12

Expected Behaviour

No Fatal error

my rector.yml

parameters:
  auto_import_names: true
  php_version_features: '7.0'
  autoload_paths:
    - 'bootstrap.php'

[TomasVotruba]

Thanks for great report!