> (I cannot paste links or images into facebook, I cannot paste text with line breaks into twitter, I cannot paste using reddit's "markdownmode"). This is not

> (I cannot paste links or images into facebook, I cannot paste text with line breaks into twitter, I cannot paste using reddit's "markdownmode"). This is not normal, something's broken with Firefox in your setup. Probably worth filing a bug. (Also it's almost certainly nothing to do with the JS engine.)