Hey, it's me again.

I have a problem with the “formatDisplayField” callback concerning the grouping function.

I have two groups of the same column (I know that it doesn't make any sense!). The first time the formatDisplayField method is called everything works fine but the second time the “option” argument is undefined.

Please take a look at the following fiddle: http://jsfiddle.net/uWqde/1/

Click on the “Click me to group” link and take a look at the formatDisplayField Callback method.

(in my scenario a user can choose dynamically how the data should be grouped so he can choose the same column twice even though it's senseless. My problem ist that I need the option argument to use the formatter but it's undefined)