setRowMetadata not working

[giedroyc]

Cannot get row metadata to work as per wiki:

grid.behavior.dataModel.setRowMetadata(1, { lastName: { color: 'red' } });
grid.behavior.changed();

__META is set but grid throws an error:
Cannot read property '0' of undefined in assignProps in layer-props.js

propLayers = cellEvent.properties.propClassLayers; \\ this is undefined

Trying to hack this doesnt really help much; just propagates the errorr; ended up having to add the below which resulted in empty cell rendered... where exec is the exec from defaults

grid.behavior.dataModel.setRowMetadata(1, { lastName: { color: 'blue', propClassLayers: [1,4], exec: exec, grid: grid ,renderer: 'SimpleCell' }})

I can see that META object set using cellEventPool from renderer is much richer and works fine.