The charts starts to perform zooming when the user pans with one finger in touch devices.
Steps to reproduce:
1. Open the following demo in a touch device (or Chrome simulator)
https://demos.telerik.com/aspnet-ajax/htmlchart/examples/functionality/pan-zoom/defaultcs.aspx
2. Start panning until the zooming issue occurs
Video: http://somup.com/cr6lo73b73