When you scroll HTML in a JEditorPane on an 8-bit frame buffer (eg. a CG6),
the entire panel gets shaded over with different colors. It looks like the
scroll is done by copying a rectangle, and the copy somehow introduces these
artifacts that look like a shaded dither.

The effect is cumulative - if you scroll slightly back and forth enough
times, the shading gets so bad that it obsures the text, making it unreadable,
but even scrolling casually down a page, it is noticable. I attached a .gif of
a screen-shot after scrolling a few times up and down. The text is almost
totally obscured.

To reproduce:
- This only seems to reproduce on an 8-bit frame buffer (like a CG6).
- Bring up and application that uses JEditorPane (you can use the help
  window of SMC).
- Scroll the pane (either vertically or horizontally)
The entire pane should become shaded with artifacts that look like a shaded
dither. If you scroll slightly back and forth, the artifacts build up and
obscure the text.

Using JDK 1.2.2: (build Solaris_JDK_1.2.2_05a, native threads, sunwjit) on
SunOS 5.9 s81_16, sparc Ultra-10