That could very well be the case. It does not appear when the desktop is initially loaded, but shortly after a refresh(?). If I keep the second monitor (TV) active, the scaling workaround does not work - the lines on both monitors come back when set back to 100% scale. If I click the desktop the line disappears from the monitor that was clicked - and comes back once the desktop is no longer focused. An annoying little thing that I'm sure is equally annoying to figure out.
That could very well be the case. It does not appear when the desktop is initially loaded, but shortly after a refresh(?). If I keep the second monitor (TV) active, the scaling workaround does not work - the lines on both monitors come back when set back to 100% scale. If I click the desktop the line disappears from the monitor that was clicked - and comes back once the desktop is no longer focused. An annoying little thing that I'm sure is equally annoying to figure out.