Comment 6 for bug 628677

I agree it is a pity that the export functionality uses \makebox for unflowed text, such that \\ and other LaTeX commands do not work. However, if you want me to 'fix' it, please provide a detailed way how. Simply replacing \makebox with \parbox does not work, of course.
Note that flowed textboxes (look up the difference if you do not know) use minipage and allow you to do all kinds of fancy things.