'Save visible' just saves what you can seen on your screen at that moment in time, whereas 'Save full page' will also save anything on the page that you can only see by scrolling the page - i.e. anything above or below the 'visible' portion of the pa...
I know that was a feature of the Arc browser, but pretty sure Firefox hasn't got an equivalent, unless it's a new feature in development, or an add-on perhaps?
I'm on Mac too, with Horizontal Tabs generally. With Vertical Tabs, the 'List all tabs' icon changes to a rectangle with a bar below it, for some reason! Can you see that, and the 'Show all' sub menu - as per image? (Obviously, if you haven't got any...
You can see the saved/closed groups via the 'List all tabs' menu. (The down arrow - usually to the right end of the tab bar.) Click that and you see a 'Recent tab groups' section, with a 'Show all' sub menu. The saved/closed groups appear at the bott...
