I have the same problem and was not able to create a find a workaround to this in StarUML. However, you can re-arrange the pages after you print to pdf. I did this using the stock OSX pdf viewer, Preview(View>Contact Sheet>[Order pages by drag and drop]).
I have the same problem and was not able to create a find a workaround to this in StarUML. However, you can re-arrange the pages after you print to pdf. I did this using the stock OSX pdf viewer, Preview(View>Contact Sheet>[Order pages by drag and drop]).