Unity's WIN10 transparent channel does not render the problem solution

Unity has a hole in the win10 development, draws a transparent channel, changes in OpenGL and Direct11 window, and the transparent channel disappears.

There is direct9 below, press win+l, and then log back, the transparent channel will disappear.

is unity stop rendering, must change the window size to render, so out of this one way:

void Update () {
Screen.setresolution (Screen.width, Screen.height, false);

}

See is superfluous, but it forces unity to redraw the window.

Unity's WIN10 transparent channel does not render the problem solution