The view of the plot is set to azimutal per default. Sometimes however it does not get into that orientation for unknown reasons, when plotting a new chart. Maybe a kind of "reset" is missing. Noticed this in the "moons" subsection.
My bad! Shame on me ... I just did misinterpret the "vertical"=dobson / "tube"=refractor setting at alt/az. With "tube" setting I get it as expected. It's described in extenso in the manual as well, of which I missed to read that section.
regards