Problems about TextFlow (demo class in demos.j2d)

When I am running this demo, the text flows normally at first.
However, it corrupts after flowing one full page.
I got screenshots to show the problem.

The video cars is ATI MOBILITY RADEON X600 SE.

Could anyone tell me what’s going wrong?
settings, drivers or whatever.
Thanks a lot.

We recently fixed a couple of problems in the TextRenderer related to text corruption. Can you download the current nightly build from the JOGL home page, including the jogl-demos jars, and see whether the problem is still there?

Thank you, Ken.
After I downloaded the nightly build from home page, the problem is solved.

What i ran before is the Text Flow demo on https://jogl-demos.dev.java.net/.

Thanks a lot.