Hi John,
Thank you for contacting Syncfusion Support
We have tried the scenario which you have reported with the TabNavigationControl. When setting the first item as isselected, the firsttabcontent is visible. We have prepared a sample that demonstrate the same and also taken the video. Please find it from the following links:
Sample:
TabNavigation-120511Video:
video_120511Kindly check our sample and video and let us know if it meets your requirement. If not, could you please brief about your requirement along with the scenario which is used in your application? It would be helpful for us to proceed further on this.
Please let us know if you have any other concern,
Regards,
Vijayalakshmi V.R.