Regular Firefox doesn't seem to be fully supported either. I've tried to select a line by double-clicking on it then clicking on the "B" button, but instead of

Regular Firefox doesn't seem to be fully supported either. I've tried to select a line by double-clicking on it then clicking on the "B" button, but instead of making the line bold, it unselected it, selected the first character or word (depending on the line), and made it bold. If I only select a few words it seems to work though.