sunffb driver (creator3d etc) possible bug...

I have submitted bug reports to QT and kde on this one.. but after
testing... the bug only happens on the sunffb driver.  Here's the low
down:

In QT tree widgets (the default style, sgi and motif styles for instance
do not display the bug), the vertical lines which connect the tree items
appear WAY off.  IE: you expand a tree and the vertical line is drawn
say 3 inches to the left instead of directly under the +/- sign.  Using
the exact same binaries (qt and kde) on a fresh debian woody sparc linux
install on both machines, the problem only shows up on the sparc box
with the creator3d card / x server.  I have tried the latest 'testing
4.2' binaries from debian and it doesn't resolve the issue.  The machine
which works great is a 440mhz ultra10 clone with a raptor card (glint
driver).  The machine with the bug is an ultra60 2x300mhz box with a
creator3d.  

I am willing to make this machine available to those who would like to
help me narrow this down to get it resolved.  I am a software developer
myself, however I do not have the time to ramp up on the innards of X
server code, but would be glad to assist anyone who is 'in the know'
when it comes to what might be causing this.

Wayne