The Kendo tree doesn't show node lines which are essential for viewing data in complex trees.

There are some forums posts suggesting examples but these are not complete solutions and are buggy.  You can see my ticket #1612747 which raises some points about the issues in the solutions proposed in the KB.

Your desktop tree controls do offer node lines e.g. https://d585tldpucybw.cloudfront.net/sfimages/default-source/productsimages/wpf/productitemfeatures/treeview_hierarchical-display-and-other-bonuses_screenshot.jpg?sfvrsn=809d8c8b_3

This example shows the node lines working correctly without orphan lines that don't connect to anything.