Thanks for getting back. In the admin area, I have selected No Toolbar and saved settings.
I’m afraid I’m not familiar with the block editor. I looked it up but it appears to be for a “post”? I am working in a Page. I don’t see the block editor.
We use Elementor for most of our pages. For this page however, I just created a standard blank page, not in Elementor.
I click the Add Media button, select my PDF, the shortcode is inserted with the title at the end. I add in toolbar = “none”.