Steps to reproduce: * Set border size to Normal * Activate Cover switch or Wobbly Windows(or any other effect that transforms windows) https://imgur.com/a/Fc10a https://www.youtube.com/watch?v=9AzSs07uQwM take closer look at borders Actual results: There is a line/gap between contents and borders when the window is transformed(for example, scaled). Expected results: No line.
*** This bug has been marked as a duplicate of bug 360549 ***