Please describe the problem:
I have an application that embeds an applet (tray icon) into the notification
area. Application is run in the multiscreen environment, Xinerama enabled. In
the applet I need to track what screen currently my applet is located on. I
expect that when GNOME panel is dragged by user to another screen, my applet to
receive XConfigureEvent, but it doesn't. To be more precise, when the panel is
switched from/to horizontal to/from vertical, an event is sent with x and y
members filled with local coordinates, otherwise there are no events sent at all.

Steps to reproduce:
1. Write an application that embeds a window into GNOME notification area
2. Setup the window to listen to XConfigureNotify notifications
3. Drag the panel from one screen to another without changing its
horizontal/vertical layout (for example, from the bottom of the first screen to
the bottom of the second screen), Xinerama should be enabled
4. If no XConfigureEvents is sent, the bug is reproduced


Actual results:


Expected results:


Does this happen every time?
Always

Other information: