When a grid is set to incell editing and KendoSortable is applied to the grid, the fields don't update properly when clicking in another editable cell, reverting to the old value instead. Clicking outside the grid updates the fields properly. This doesn't seem to apply to boolean and date fields. I've prepared a JSFiddle that shows this behaviour. The version we're using is 2015.3.930.
The fiddle: http://jsfiddle.net/hw87dnxv/5/