I've dealt with the issues people have reported on the dashed border but seem to have another problem. Here's my situation with both the page menu bar and the category menu bar:
I have a background color for the bar that is different than the overall page background. When the content of either bar is left or right justified the bar displays the entire width of the page (as desired). However, when I try to center either bar (%page-center or %cat-center) the background of the bar behind text is correct but to the left and right of the text (blank space) the color is the standard page background.
If that makes sense to someone, can you help me figure out a solution or tell me what I'm doing wrong? Thanks.