Hi Ezhumalai,
Thank you for contacting Syncfusion support.
We have tried to reproduce the reported behavior with the TabControlAdv, with the given information i.e we have enabled the ShowScroll and ThemeEnabled property and assigned the style as TabRenderDockingWhidbey in design time and added some Tabs in the TabControlAdv. When running the sample the same index is maintained for the TabPageAdv. We have prepared a sample for your reference and this can be download from the below location.
Could you please check with the above sample and video and let us know whether we have followed the same steps to reproduce the reported behavior? If not, please share us the sample that can reproduce the reported issue and please let us know the EssentialStudio version that you are using currently, this will be helpful for us to analyze and provide you a prompt solution as early as possible.
Also, could you please ensure whether the TabPageAdv are added in the order in Form1.Designer.cs file? Because the tabs will be arranged at the runtime with the order the has been added in TabControlAdv in the Form1.Designer.cs file. Please refer the below screenshot for further reference. E.g. If we want to rearrange the TabPageAdv3 in between the TabPageAdv1 and TabPageAdv2, we have to remove the line “this.tabControlAdv1.Controls.Add(this.tabPageAdv3);” and inserted in between the TabPageAdv1 and TabPageAdv2. Hence please ensure this and let us know whether the reported behavior has been resolved.
Regards,
Senthil.