RadEditor's problem in IE8 within RadScheduler

[Lucien]

Hi,

i have something really strange:
RadEditor doesnt show up in IE8 within AdvancedInsertTemplate or AdvancedEditTemplate from RadScheduler.
In Firefox 3.6.13, it looks better.
Here the code:

<telerik:RadPanelBar runat="server" ID="RPB_COB" Width="100%">
            <Items>
                <telerik:RadPanelItem Text="Contenu/Objectifs/Bilan" Expanded="True" runat="server">
                    <Items>
                        <telerik:RadPanelItem Value="COB" runat="server">
                            <ItemTemplate>
                                <!-- more code here ... -->

                                <telerik:RadEditor ID="RE_C" runat="server" EditModes="Design"
                                        ToolbarMode="ShowOnFocus" Width="200" Height="200">
                                    <Tools>
                                        <telerik:EditorToolGroup Tag="Formatting">
                                            <telerik:EditorTool Name="Bold" />
                                            <telerik:EditorTool Name="Italic" />
                                            <telerik:EditorTool Name="Underline" />
                                            <telerik:EditorSeparator />
                                            <telerik:EditorTool Name="ForeColor" />
                                        </telerik:EditorToolGroup>
                                    </Tools>
                                </telerik:RadEditor>
                            </ItemTemplate>
                        </telerik:RadPanelItem>
                    </Items>
                </telerik:RadPanelItem>
            </Items>
        </telerik:RadPanelBar>

In attachments, you can see some screenshots to see how it looks like within IE8 and FF3.6.13

Thank you in advance for your help and support.
Lucien

[Peter]

Hello Lucien,

Can you send us a live url of the issue or open a support ticket and attach a simple demo?

Regards,
Peter
the Telerik team

[Lucien]

Hello Peter,

here is a live url : http://testtelerik1.profmanager.fr/Calendar.aspx
login: AudeG
pwd: 123

If, you are redirected to the Login.aspx page, then again to the Default.aspx, then type http://testtelerik1.profmanager.fr/Calendar.aspx to access to the scheduler.
Now, just double click anywhere, the the advancedtemplate pops up, then scroll down to the 3 radeditors:

Contenu

Objectifs

Bilan

and you will see the problem.
Under IE, the radeditor is like it has disappeared, i mean, you can not see the style and layout,
Under Firefox, sometimes it looks great, othertimes it doesnt look so great.
Well, you will see it by yourself.

Thank you again for you time and support
Lucien

[Peter]

Hello Lucien,

Thank you for the test url. We are still trying to find the cause of the problem, but so far we haven't made much progress. We will follow up as soon as we find something of interest.

Best wishes,
Peter
the Telerik team