WPTableDialog - tables with width <> 100 %

    When trying to add a table with a width <> 100% using the WPTableDialog the table is always full width (though results are different when doing copy and paste to Word).
    When the table is supposed to be centered the position of the table actually seems to be calculated as though the table width really was smaller, but the table still remains wider, not minding the page margins.

    I find this issue in both my application and a (slightly) modified version of CrTableU:

    Code
    procedure TCrTableForm.Button3Click(Sender: TObject);
begin
    WPTableDlg1.Execute;
end;

    Are there any specific options I have to set before executing WPTableDlg1..?