[xwiki-users] Livetable macro, custom classes, sorting

Hi, I am using xwiki 2.1.1 and i am having problem with livetable and a simple custom class. Here is my code: #set($collist = ["Customer", "Responsible", "TargetDate", "Activities", "priority", "_actions"]) #set($colprops = { "Customer" : { "type" : "text" , "size" : 20, "link" : "edit"}, "Responsible" : { "type" : "list" , "class": "XWiki.XWikiUsers"}, "TargetDate": { "type" : "date" ,"sortable":"true", "displayName":"Target Date"}, "Activities" : { "type" : "text" }, "priority": {"type": "number" }, "_actions" : {"actions": ["copy","delete","rename","inline"]} }) #set($options = { "className":"Task.TasksClass", "rowCount": 15 }) #livetable("alldocs" $collist $colprops $options) It displays three documents, but as soon as I click on one of the other columns to sort the table, it gets empty. For the allDocumentsSnippet it works. I have no carriage returns or quotes in the fields that are to be displayed. I tried with different options and also only two fields (customer and priority): the same happens. Is this a known bug or did I misunderstand the livetable macro? Thanks, Hans-Peter