Ah, this works because there is a vertical scroll bar. I just added data to my jqxGrid and the resizing of the last column works as it does in the example you provided. Try emptying the data out of your example (hiding the vertical scrollbar) and see if it still does the same behavior. Sorry, I forgot to mention that it was in a grid with no data =\
Here’s a jsfiddle with data in it, and as you can see it works like your example.
Here’s the same jsfiddle with the data set to an empty array. Try to expand the last column.
Notice each attempt to expand it actually shrinks it a little be each time.
