I added a column "micro sd" to a grid.  The new column appeared to the right of the previous right-most column, "usb flash drives".

 

I right-clicked on the column header for the new "micro sd" column, and clicked "sort items ascending".

 

Instead of sorting the items in ascending order of the values in the "micro sd" column, the items were sorted in the ascending order of the values in the "usb flash drives" column.

 

The above process for sorting the items on the values in the "micro sd" column did not work until after I refreshed the grid.