After upgrading to 2014.3.1119, the resizable configuration of the grid no longer works when the grid handles the detailInit event. You can replicate the problem by modifying the grid/hierarchy demo here:
http://demos.telerik.com/kendo-ui/grid/hierarchy
Just add resizable:true to the #grid and you'll see that the columns are not resizable.
http://demos.telerik.com/kendo-ui/grid/hierarchy
Just add resizable:true to the #grid and you'll see that the columns are not resizable.