How do I share web page content from Reader Mode?

In Safari Reader Mode, clicking Share/ Mail, creates a new email message containing a link to web page as well as the full content of the web page, not just the link. I’m new to iOS Firefox, I see the icon for Reader Mode, but when I share via email, only the link appears. Is there a setting (or extension) somewhere that performs the select all/copy/paste when setting up the email to be shared? Thanks!