How can I show the tab bar in Modern UI Firefox (Elm, 19.0a1 2012-11-01) as in the following screenshot?
I assume some gesture would work, but I don't have a touchscreen.
I can currently switch tabs using the Ctrl+Tab and Ctrl+Shift+Tab, but no tab bar!
When I add a new tab with the plus button on the top right, I see tab previews briefly but they disappear as soon as the page loads:
How can I get the tab bar (either from the first or last screenshot) to show on demand and let me select a tab?