visible line with 20 Pixel after Click on Desktop or other window

Mar 23, 2015 at 9:59 PM
i use the ribbonmenue, is wonderful.
But, when i click on the desktop or on an other window, i see a line over the head of the tabs (Height: 20 pixel). When i click on the tab, this line is no more visible. When i click on other window, the line shows again.
I have problem the problem with all themes: 2007, 2010, 2013.
I use Win7, Win8, Win10, the problem is on all os.
Can any people help me ?
Mar 24, 2015 at 8:40 PM
Edited Mar 24, 2015 at 8:40 PM
You can see the error on this screenshot: