Datesource / Datagrid bugs

Hello,
I have seen a few issue with the datagrid feature and have finally narrowed down their buggy behavior.

Issue 1:
1. Create new datasource
2. Add new property
3. Specify datasource as groovy from dropdown.
4. Try changing datasource to datagrid -> soapUI seems to get stuck and cannot change the value of datasource.

Issue 2:
1. in datagrid, if 'clear Cells' is clicked when the row is empty, soapUI will add a new row.

Issue 3:
1. in datagrid, it does not seem possible to delete a empty rows.

Thanks

Ali