I have been using two Menu controls with Metro Touch skin applied.
Last year I modified the CSS to remove borders, background and a few other elements, as you can see in the first screen shot (2015)
Sometime this year, in another project with more recent releases, now on the latest Q2, I find that there are vertical lines, as shown in screen shot 2016.
The CSS is identical for both.
All I need is to modify an unknown style that puts the vertical line there, at the right of each of the two menus.