Under CDE, clicking on the title bar of a window brings that window to the top. This is regardless of point-to-focus/click-to-focus.

Undecorated Frames/JFrames do not behave this way, and it's a real problem. In fact, there's NO way for a user to bring an undecorate Frame to the front, so if several native apps overlap the Java app, you're screwed.

This is an important, missing piece of undecorated frames.