i reviewed your examples and noted particularly in the ones where you mix the fonts that the issue occurs with the introduction of comic sans. in the other examples you have comic sans only. whether or not it is the new editor, i would refrain from using comic sans in the same way i no longer paste and stick from word. i create my ads in notepad ++ and avoid "creative" fonts. imho ads are more professional that way. regardless, there are other programs that are not very receptive to comic sans...can't speak to the cause but i avoid it and msword for listing web business.