Index: src/org/openstreetmap/josm/gui/dialogs/properties/TagEditHelper.java
===================================================================
--- src/org/openstreetmap/josm/gui/dialogs/properties/TagEditHelper.java	(revision 15944)
+++ src/org/openstreetmap/josm/gui/dialogs/properties/TagEditHelper.java	(working copy)
@@ -70,7 +70,9 @@
 import org.openstreetmap.josm.command.Command;
 import org.openstreetmap.josm.command.SequenceCommand;
 import org.openstreetmap.josm.data.UndoRedoHandler;
+import org.openstreetmap.josm.data.coor.LatLon;
 import org.openstreetmap.josm.data.osm.DataSet;
+import org.openstreetmap.josm.data.osm.INode;
 import org.openstreetmap.josm.data.osm.OsmDataManager;
 import org.openstreetmap.josm.data.osm.OsmPrimitive;
 import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
@@ -692,6 +694,8 @@
             final Iterator<OsmPrimitive> osmPrimitiveIterator = sel.iterator();
             final OsmPrimitive virtual = (osmPrimitiveIterator.hasNext() ? osmPrimitiveIterator.next().getType() : OsmPrimitiveType.NODE)
                     .newInstance(0, false);
+            if (virtual instanceof INode)
+                ((INode) virtual).setCoor(LatLon.ZERO);
             virtual.put(key, value);
             final ImageIcon padded = ImageProvider.getPadded(virtual, ImageProvider.ImageSizes.LARGEICON.getImageDimension(),
                     EnumSet.of(ImageProvider.GetPaddedOptions.NO_DEFAULT, ImageProvider.GetPaddedOptions.NO_DEPRECATED));