Screen artifacts on GUI applications

[Sarah]

Hello,

If this has been previously asked, I apologize; I have no idea what I 
would search in regards to this issue.

When using any GNUstep GUI application (e.g., GNUmail, GWorkspace 
0.9.2), I get an odd artifact issue while scrolling. This will always 
happen no matter how I scroll: via scroll wheel or scrollbars. The only 
errors I ever get are GWorkspace saying "Selected non-scalable font" a 
couple of times, but that's the only application to output anything to 
the console. The attached image shows exactly what's going on with the 
GUI application.

I'm not sure if this would be a graphics issue or a GNUstep issue, but 
it's really the only thing stopping me from getting it set up properly 
on this system unfortunately. If anyone has any ideas as to what the 
issue might be, please let me know.

- Sarah

2014-11-18-102145_730x369_scrot.png
Description: PNG image