List updaterows does not work with groupby

[tali]

A list, called by a menu, should refresh without reloading the page. And indeed, the code

Fabrik.blocks['list_1_com_fabrik_1'].updateRows();

works nicely...until I put a GroupBy on the list

When the list is grouped, updateRows brings back no data to the client and the table looks empty, except the footer which holds the right number of rows.

I looked at /media/com_fabrik/js/dist/list.js and found that

this.options.groupedBy

is always empty (List grouped or not)
Don't know if this has to do with the bug.

Is there a fix to get updateRows working correctly with a grouped list?