Thank you for writing.
I will recommend selecting the desired tab (the first one in your case) at design time - simply select it in the control at design time. This way, this page will be selected at runtime and the page item (tab) will be visible.
I have tested the code that you have provided and indeed the tab is not visible, regarding the fact that its page is selected. I will add this into our PITS system
, and we will address it in a future release. Here is a link to the item
, where you can add your vote for it.
Your Telerik points
have been updated for this report.
I hope that you find this information helpful. Should you have any other questions, do not hesitate to contact us.
the Telerik team