‘Text Spinning’ doesn’t seem to work with ‘THE BEST SPINNER’

Hello! With all the default options, I have only activated 'Strip HTML From Full Content' in the rule. When I run it with 'Spin Text Using Word Synonyms: DISABLED' it creates the same 'Post' as when I run it with 'Spin Text Using Word Synonyms: THE BEST SPINNER - HIGH QUALITY - PAID'. Before executing the rule again, I permanently delete the 'Post' created. In the rule I only put the URL to an article. Thanks!