Comment 6 for bug 921094

managed to get the problem back, but the dead zone/inviisible window is
not in this case identical to the switcher. The attached output of
xwininfo -all describes an area slightly below the switcher, slightly
shorter, and approximately the same width (I can't seem to get xwininfo
data on the switcher itself, sorry).

By bringing a full-screen terminal window to the front of the window
stack, I was able to visually trace the approximate dimensions of the
dead zone (because the cursor shape changes visibly). I also found a
second very small dead zone in the upper right quadrant -- very oddly,
the xwininfo output for that second, very small, dead zone is identical
to the output of the first window. I can't really see why that would be
the case, but am also attaching that output to this bug report.

xwininfo -all doesn't really seem like enough info to figure out which
application is responsible for spawning, then abandoning this window.
Is there anything else I can do? I'll try to hold off on restarting
compiz for a while in case you have suggestions.

matt