I am sorry to hear you are running into this problem. What kind of Tab control and ComboBox are you testing? Are these Microsoft Silverlight controls or Telerik RadComboBox and RadTabControl? If these are Telerik controls, can you share the exact version of the RadControls your application is running? Can you try to reproduce the issue against our Silverlight demos here
? I have tried to reproduce the issue locally, but as you can see in this video
I wasn't able to do so. Also please export the step failure details
and attach that file for analysis. A Jing
video of the behavior may also help us diagnose your issue.
the Telerik team