Header bottom border

The bottom border of the bar header doesn’t actually display, on Android at least. However, changing the CSS to utilize box-shadow rather than border-bottom width/color does display. The following works:

.bar-header {
  top: 0;
  border-top-width: 0;
  box-shadow: 0px 1px 0px #b4b4b4;}

I think this should be addressed as well. The style in browser should be reflected on the device. Why is it not being displayed correctly on the device?

I’m with the same problem. Did anybody gets the solution?