Index: /trunk/src/org/openstreetmap/josm/gui/dialogs/SelectionListDialog.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/dialogs/SelectionListDialog.java	(revision 4067)
+++ /trunk/src/org/openstreetmap/josm/gui/dialogs/SelectionListDialog.java	(revision 4068)
@@ -59,4 +59,5 @@
 import org.openstreetmap.josm.data.osm.event.DataSetListener;
 import org.openstreetmap.josm.data.osm.event.DatasetEventManager;
+import org.openstreetmap.josm.data.osm.event.DatasetEventManager.FireMode;
 import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
 import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent;
@@ -66,11 +67,10 @@
 import org.openstreetmap.josm.data.osm.event.TagsChangedEvent;
 import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
-import org.openstreetmap.josm.data.osm.event.DatasetEventManager.FireMode;
 import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
 import org.openstreetmap.josm.gui.DefaultNameFormatter;
 import org.openstreetmap.josm.gui.MapView;
+import org.openstreetmap.josm.gui.MapView.EditLayerChangeListener;
 import org.openstreetmap.josm.gui.OsmPrimitivRenderer;
 import org.openstreetmap.josm.gui.SideButton;
-import org.openstreetmap.josm.gui.MapView.EditLayerChangeListener;
 import org.openstreetmap.josm.gui.dialogs.relation.DownloadRelationMemberTask;
 import org.openstreetmap.josm.gui.dialogs.relation.RelationEditor;
@@ -113,4 +113,5 @@
         lstPrimitives.setSelectionModel(selectionModel);
         lstPrimitives.setCellRenderer(new OsmPrimitivRenderer());
+        lstPrimitives.setTransferHandler(null); // Fix #6290. Drag & Drop is not supported anyway and Copy/Paste is better propagated to main window
         pnl.add(new JScrollPane(lstPrimitives), BorderLayout.CENTER);