Thank for advise.....this is my problem: I have task bar on top but the sidebar won't shift down and adjust to the change. If i check always on top, no change position....but if close sidebar and restart it now is okay, and the sidebar is no more under taskbar of winodws...! But in this way sidebar is always on top. So i return in panel of sidebar and uncheked "always on top"........the sidebar return like before !!! sigh A try to change theme or style...but nothing Why ??? Thank for advise