Reader mode button should not be available while page is loading
Load this CNN article and note that reader mode is available (reader mode icon visible in address bar). Then click on the CNN Business logo in the top left of the page to load the CNN Business landing page, where reader mode is not available. Notice that the reader mode icon remains visible until the page finishes loading, and if clicked it will apply the reader mode style to the page, despite this not actually working very well. You will wind up in a pretty broken reader mode. It would be better to remove the reader mode icon immediately when beginning a new load, and show it again only after the new page is determined to actually support reader mode.
- Epiphany version (from About Web in the main menu): 46.0-65-g2cc2ef669+
- WebKitGTK version (from About Web -> Troubleshooting -> Debugging Information): 2.44.1
- Distributor (Linux operating system, Flathub, Epiphany Tech Preview, etc.): Tech Preview