Comment 24 for bug 80343

this page lists the whole changelog summary

http://gitweb.freedesktop.org/?p=xorg/app/xcompmgr.git;a=summary

our package name says "20060831", so the changes start from

http://gitweb.freedesktop.org/?p=xorg/app/xcompmgr.git;a=commit;h=d75fd64f7aefd818dcac7ab2ebdf57e69bf12ea5
"Set the _NET_WM_CM_S* atom on the screen we're running on."

I think *that* might be the key-change for our bug http://standards.freedesktop.org/wm-spec/1.4/ar01s08.html

the other commit addresses a different bug http://bugs.freedesktop.org/show_bug.cgi?id=9762

HTH