This is found in the install regression tests for x86 for snv_58, snv_59 and also in s10u4_03 after Xorg 7.2 integrates.
On the following x86 machines, the Install Window is too small to be readiable. They were hooked up to the ViewSonic Professional Series P75+. The monitor is running in edge-to-edge at 1620x1200.
This had been fixed in snv_63 and the install window is fine now.