Some additional information: when I install NoScript and restore defaults settings it starts working (I mean button panel appears).
But as soon as I add any of my settings - the panel disappears. For instance I add "about:newtab" in white list - and after restart of FF there is no button panel.
But as soon as I add any of my settings - the panel disappears. For instance I add "about:newtab" in white list - and after restart of FF there is no button panel.