Funny behaviour inside dialogs

I have a dialog box (derived from CXTPDialogBase) that is resizable (I don't use the XT sizable dialogs but this class: http://www.codetools.com/dialog/dynwindow.asp, because I just switched to XT and used the other class already since 2 years).

Now I added a menu bar (CXTPMenuBar), a tool bar (CXTPToolBar) and a status bar (CXTPStatusBar) to the dialog. The dialog then looks like this:

Now I have a strange behaviour, in that every time the user clicks a tool bar button or a menu bar button and then the dialog is resized by the user, the last-clicked bar (menu bar or tool bar) is put on top of the other. Let me explain:

1.) The user clicks a tool bar button:

2.) Then the user resizes the dialog. Now the tool bar moves up:

3.) The user now clicks a menu bar item:

4.) And then resizes the dialog again. Now the menu bar jumps up again to the correct position:

Question: Can you please tell me how I can tell that bars to keep their positions?

More informationen: Whenever a WM_SIZE event occurs, I do the following code on the bars to keep them fill up the whole dialog width:

RepositionBars(
    AFX_IDW_CONTROLBAR_FIRST,
    AFX_IDW_CONTROLBAR_LAST,
    0 );

ToolBar.InvalidateParents();

Thank you for enlightening me .
Uwe

Thanks Oleg! My product ships in February 2005. So I will wait and if there is no next version I will recompile the sources as you mentioned.

Thanks
Uwe