Thanks for your quick reply and proper guidance. I contacted Yoast seo and they replied that the issue is related with their yoast premium plugin. With some pagebuilder elements, plugin yoast does not analyze content outside of a page or post’s main content box. The plugin can correctly detect content insert through the default editor in a visual mode. If the content is added using a different editor, the plugin could not detect it correctly. They also replied that they are working to improve yoast’s compatibility with page builder tools. However, it could happen that in certain cases, our plugin shows incorrect analyses.