The scrolling functionality provided by a ScrollPane's scrollbar doesn't
apply the correct increments to the scroll operation. Click on the page
increment zone, and the image is shifted by only 1 pixel. The line
increment arrows appear to apply a believable increment, but I don't know
if that's by accident.

Inspection of the JDK1.1.1 source shows that a fix provided by SunSoft has
been applied, but certain functionality, namely,
"MScrollPanePeer.calculateAdjustables()", has been removed, and no equivalent
functionality is in place. The fix depended upon this method.