The issue Petyo has linked has been closed and is no longer reproducible, neither with the latest official version (2018.2.620) nor with the version you have specified (2017.2.621). For example you can check the Slider's live Core demos
, at my end they work correctly on mobile devices.
Since the problem you are facing is not related to this old issue about the Kendo UI for jQuery Slider, please open a new thread in the UI for ASP.NET Core forums
and provide more details on your setup and scenario, for instance post the custom logic executed in the Slider's change event handler.
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