Hello, I followed your link and I still have the problem.
I disabled optional extensions to leave only Joomla and SPPageBuilder. I deactivated the plugin for managing cookies. I don't have CSS and JS compression enabled. I'm on the basic Helix template.
On the other hand, if I go through the administration interface then System / Template and click on shaper_helixultimate then the Template Options button, I have the rendering without being able to touch the content. Because these are only the framework settings and not the content of the home page.
I did my tests on PHP 7.4.x
Thanks