invalid unsaved rows in list grid disappearing when a valid row is edited

[rs44]

I have a listgrid with a client only data source. I add a row and fill in data.
then i add rows and leave the rows blank, which causes those rows to be invalid, as there is required data. then i go back to the first row and click to check on the the boolean checkbox fields and the invalid edited rows disappear. Other data that i modify doesn't cause this behavior but the checkbox does. If i click to add a row, the disappeared data comes back again.

I use the grid.startEditingNew() to start a new row

ListGrid grid = new MXListGrid();
grid.setWidth100();
grid.setHeight100();
grid.setHeaderHeight(60);
grid.setAlternateRecordStyles(true);
grid.setShowFilterEditor(true);
grid.setFilterOnKeypress(true);
grid.setModalEditing(true);
grid.setEditEvent(ListGridEditEvent.CLICK);
grid.setAutoFetchData(true);
grid.setEditByCell(true);
grid.setValidateOnChange(false);

ListGridField profileId = new ListGridField("attr_profile_id", "Profile id");
profileId.setType(ListGridFieldType.INTEGER);
profileId.setCanEdit(false);
profileId.setCanHide(false);
profileId.setHidden(true);

// Grid Columns
ListGridField currency = new ListGridField ();
ListGridField benchmark = new ListGridField ();
...

ListGridField noCharge = new ListGridField("chargeOn", "No Charge");
noCharge .setCellAlign(Alignment.CENTER);
noCharge .setType(ListGridFieldType.BOOLEAN);

ListGridField addRow = createAddRow();
ListGridField removeRow = createRemoveRow();

[Isomorphic]

This is fixed and available for download in latest nightly builds.