Hello Ion,
This is a feature of the native iOS control. Unfortunately, there is currently no way to remove it. We do have the request in our backlog - https://feedback.telerik.com/xamarin/1406598-segmentedcontrol-ios-provide-a-way-to-remove-the-initial-animation
If you add your vote to the item, it will increase the priority of the request. If you Follow the item, you'll be notified of status changes (Approved, In Development, etc).
Regards,
Lance | Technical Support Engineer, Principal
Progress Telerik
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Explore the
Telerik Feedback Portal
and vote to affect the priority of the items