Comment 5 for bug 581341

This bug affects me. I am running xnest 2:21.1.3-2ubuntu2.7

When moving a window in the outer X server over the Xnest window, and then moving it away again, the Xnest screen is redrawn (the window manage draws the root widow background, window borders, title bar, and window background) but the applications do not redraw their contents.

For example I have an xterm in the xnest server (white background). When I do as described above I see the xterm with its white background, but the contents is missing. If I move the mouse into the window then I see the cursor but nothing else. If I move another window inside the xnest server onto the xterm and then move it off again then the xterm does redraw its contents (just the part that was "damaged" by the obscuring window.

See images.tgz
tar xzf images.tgz

b1.png - Xnest with 2 xterms and fvwm
b2.png - Obscured by window in outer X server
b3.png - Obscuring window removed. Note that white xterm has no content now.
b4.png - Partially obscured by xterm in Xnest server,
b5.png - obscuring window removed. Note that white xterm has been partially redrawn.