Problem NetSurf on Raspberry PI since 13 August 2012

I am having problem with netsurf the display of the web page is corrupt worked fine with rom release 12 August 2012 but all release since them has been corrupt
is surest into the first quarter of the window withe the rest of the window as a display with look like the horizontal hold has gone see jpeg

jpeg

Not sure, but could this be the cause:

https://www.riscosopen.org/forum/forums/5/topics/976?page=4#posts-13619

Thank you pointed me in the right direct display→render and turn off “buffer all rendering” that fixed the problem