move_panel and getbegxy

[Clive Nicolson]

I am using ncurses-5.6 .

I have a panel who's window is associated with a menu (for which I provided
a subwindow via derwin).

I move the panel with move_panel and then do a getbegxy on both the window
and the menu's subwindow, the coordinate pairs returned indicate that the 
subwindow has not moved, but that the window has!

Is this expected?

I also note that the menu_driver can no longer select items (with the mouse)
on the moved menu!

Clive