Message Pane visibility should be remembered per folder, as in Outlook. And should not be even visible for Spam, Junk, Virus and similar folders by default.
@AgentvirtuelThat's at very least 2 clicks and additional mouse movements. Before Supernova there used to be a button you could place on the toolbar. But no longer. There is only dropdown button with menu now.
@JurajDepends on how big your tablet is. But I prefer Desktop sites on tablet as well. It just needs some Zooming functionality, like Desktop Firefox has.
But WebExptensions API in Android version is incomplete. Extension developer can't add anything to context menus, as Menus API isn't implemented. Also composed pages appears empty.
This says Delivered, but there are still a lot of addons not working. Like Menus API not working at all. Nothing comes up in context menus. Start page dial addons not working, even with enabled Composed homepage.