There is a bug in the ListView that causes a JavaScript error and failed refresh when the query function is called on a bound DataSource without specifying the "group" option. Here is a jsFiddle to demonstrate: http://jsfiddle.net/JNP7Z/.
According to the docs you should not have to specify grouping when calling the query function.
Jonathan Marston
According to the docs you should not have to specify grouping when calling the query function.
Jonathan Marston