I don't have an empty space on the left side, but the blank space on the right is needed to be able to drag the window, as there is no window title bar.PS: The horizontal tab bar also has this space.
I've recently switched my Firefoxes to use the new sidebar + vertical tabs as it finally became usable. Thanks a lot!My issues with the current implementation are:I have too many pinned tabs (5 to 8) to fit without scrolling, and the collapsed sideb...
