really annoying problem when using a compositor

[Carlos Eduardo Rodrigues Diógenes]

Hi,

I have a Ubuntu 7.04 installed and I'm running Beryl in it with the i810
driver in a i915 chipset of a Dell Latitude D510.

If I access this page from firefox:
http://developer.gnome.org/doc/API/2.0/libbonobo/libbonobo-bonobo-property-bag-client.html

and roll down the page and then roll up it get all filled with the
header "Libbonobo Reference Manual".

This happen in any compositor: compiz, metacity, gnome-mag, etc.

I also have filled a bug about it:
https://bugs.freedesktop.org/show_bug.cgi?id=8871

I want to know if there are some progress to resolve it. I'm also
available to track this down. I don't know much about composite internal
and I have no idea why this could be happening, but if someone have any
hint about it, please share!

Best regards,
Carlos.