Swing is aware that under the Windows Look and Feel, we have a delay in repainting after a maximization. However, with this delay, I'm able to see a regression in what I believe is AWT painting/clipping. I suggest it is AWT since Swing hasn't made any painting changes lately and this started being apparent in a recent build.

Please run the following test:

Run SwingSet2.
Switch to Windows L&F
Maximize.
Because of the delay, the window takes a moment to fill. But you'll see artifacts as illustrated by the attached one.png.
Now Restore.
The Window repaints quickly, but it takes a second for the status bar at the bottom to be repainted. This is captured in screenshot two.PNG.