To reproduce this issue:  I have a WebDialogWindow within a WebDialogWindow... or a smaller popup within a popup.  I've tried many things to correct the issue.  But nothing seems to work.  I do want to use your WebDropDown control.  The issue is that the 'Drop Arrow' will render about 25px above the control.  In the correct horizontal place, but not correct vertically.  However if I drag the mouse over to the control - magically it will go back into place... walla!

Notes:
1) This only affects Internet Explorer. Well I've tested FireFox
2)  I prefer to use Client-InputMouseDown="open" - But that item does require some JavaScript include.  The problem will persist whether you use it or not.
3) Originally starting the smaller popup in 'Hidden' mode and then switching programatticaly to 'Normal' resulted in the issue.  After some testing and some switching around. In my current code state.  It doesn't matter if I start the 2nd popup in 'Normal' mode or not.  Both have the same result  They are flawed.
4) I tried putting the webdropdown in its own Table.  I tried putting it in a <div> tag.  And a few other things.  Nothing worked. 

Here is the aspx code for the smaller popup:

        <ig:WebDialogWindow ID="PrintView" runat="server" Height="185px" Width="450px"

        InitialLocation="Centered"

            Modal="True">

            <ContentPane>

                <Template>

                    <span style="font-size:large">Reprint Prescription Label</span>

                    <br /><br />

                    <table>

                        <tr>

                            <td>Printer: </td>

                            <td width="300px">

                                <ig:WebDropDown ID="wddPrinter" runat="server" Width="185px" ClientEvents-InputMouseDown="open" DisplayMode="DropDownList">

                                </ig:WebDropDown>

                            </td>

                        </tr>

                        <tr>

                            <td>Number of Labels: </td>

                            <td><ig:WebNumericEditor ID="wneLables" runat="server" DataMode="Int"

                                    MaxDecimalPlaces="0" MaxValue="25" MinValue="1" Nullable="False"

                                    Width="50px">

                                 </ig:WebNumericEditor>

                            </td>

                        </tr>

                        <tr>

                            <td>&nbsp;</td>

                            <td>

                                <asp:Button ID="btReprint" runat="server" Text="Reprint" />

                            </td>

                        </tr>

                    </table>

                </Template>

            </ContentPane>

        </ig:WebDialogWindow>