feature editing for an empty attribute doesn't work after modifying a geometry first

[bartvde]

Start up the feature editor, press Edit, and modify the geometry, then Save. Press Edit again and edit one of the attributes that is empty in the grid, put in a value and press save again. The transaction is empty in this case.

<wfs:Transaction xmlns:wfs="http://www.opengis.net/wfs" service="WFS" version="1.1.0" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><wfs:Update typeName="feature:taxlots" xmlns:feature="http://medford.opengeo.org"><ogc:Filter xmlns:ogc="http://www.opengis.net/ogc"><ogc:FeatureId fid="taxlots.18640"/></ogc:Filter></wfs:Update></wfs:Transaction>

[bartvde]

so Ext has undefined values in record.modified, and OpenLayers ignores these when writing out

[bartvde]

most likely this change is gonna get reverted and there will be a change in OpenLayers instead see:

3ec70a6#commitcomment-3630416

[bartvde]

see: openlayers/openlayers#1040