Listgrid is loosing criteria

Tested with smartgwt-3.1p.2013-08-10 and FF 20.0.1.
Modified showcase: AutofitFilterSample

Steps to reproduce:
1.Click on fetch button to retrieve data based on initial criteria.
2.Add new column "Country"
3.Click on filter icon - > listgrid is doing fetch without any criteria - > Criteria are lost.

This is not happening when you first remove "Continent" column and then add back columns "Continent" and "Country"

Is this a bug? If yes, can you please fix it?

Thank you

Attached Files

AutofitFilterSample.java (3.2 KB)