Hi asterinex,
Thanks for contacting Syncfusion Support.
We have checked the reported issue " SelectedIndex on iOS always 0" from our side and we were unable to reproduce the reported issue from our side and we have attached the sample, which we have checked the reported issue from our side. Please find the sample from the below link.
Sample :
http://www.syncfusion.com/downloads/support/forum/134948/ze/F134949-2073495183
So, could you please provide below mentioned details,
1) Modified sample which replicates the reported issue.
2) Which iOS version and device model reported issue gets occur.
It will help us to provide appropriate solution on this.
Regards,
Vinnalan K A.