There is no visual indication of any sort to show which of the tabs you are currently viewing. This can be seen on your tabstrip demo page where it's not easy to tell when you click a city if that click actually worked or which city you are looking at when the page loads.
Getting Started - TabStrip - Kendo UI for Angular (telerik.com)
This is in contrast with the material design spec examples for tabs seen at the link below where the selected tab is underlined and has a distinct font color.