Incorrect window sizing for User Preferences

Using Spark 2.6.0 beta 2

Click on Spark, Preferences - the window displayed is not properly sized to display the save/apply/close buttons without a manual resizing.

What version of the OS is running on.

Sun Polaris 10

Windows XP sp2

Java 1.5.0_16-b02

I have created a support ticket for the developers for this issue: