RadStrip Control

[Mercede]

This issue is specific to IE 9 and does not happen in Chrome and Firefox,
Occasionally It happens once in a while in Opera.

There is a master page "M" with a AJAX script manager control. 
In the content page a RadTabStrip control is used within the UpdatePanel. 

 Below is the declaration:  

<telerik:RadTabStrip ID="tlRetentionStrip" runat="server" SelectedIndex="0"
                  Skin="WebBlue" MultiPageID="tlMultiPage">
                  <Tabs>
                      <telerik:RadTab runat="server" Text="Queue Details" PageViewID="tlPageQueueDetails"
                          Selected="True" Owner="tlRetentionStrip">
                      </telerik:RadTab>
                      <telerik:RadTab runat="server" Text="Schedule: What does it run?" PageViewID="tlPageSchedule"
                          Owner="tlRetentionStrip">
                      </telerik:RadTab>
                      <telerik:RadTab runat="server" Text="Lead Filters" PageViewID="tlPageFilters" Owner="tlRetentionStrip">
                      </telerik:RadTab>
                  </Tabs>
              </telerik:RadTabStrip>

When the page is viewed in IE9, it has two issues

1. It displays the tabs as bulleted list  (not always but often)
2. It displays the Tab contents one below another.

Chrome.jpg:  Shows the correct view where the first tab shows the contents of onyl the first tab.
IE9.jpg: After displaying the contents of the first tab, the contents of the other tabs are shown below

[Nencho]

Hello Mercede,

It seems that the issue you are facing might be closely related to an Internet Explorer style limitation, which is well explained in this blog post. It could be easily resolved by putting RadStyleSheetManager on the page. Give it a try and let us know if the issue still persist.

Greetings,
Nencho
the Telerik team