Firefox reader mode displays blank page
I run Firefox on Fedora Linux (Silverblue). For several releases I've noticed that the reader mode only displays the Close Reader View, Text and Layout, and Theme options and nothing else i.e. no content.
When I run it in troubleshooting mode, it works. I've tried disabling all my extensions, deleting all my extensions,restoring the browser to default settings but nothing makes a difference. I'm always on the latest release (currently 147.0.3). I currently have multiple profiles, but it didn't work even before I rebuilt them. I'm out of ideas.
Any help is appreciated