Index: trunk/src/org/openstreetmap/josm/gui/dialogs/properties/PropertiesDialog.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/dialogs/properties/PropertiesDialog.java	(revision 5842)
+++ trunk/src/org/openstreetmap/josm/gui/dialogs/properties/PropertiesDialog.java	(revision 5843)
@@ -10,4 +10,5 @@
 import java.awt.Point;
 import java.awt.event.ActionEvent;
+import java.awt.event.InputEvent;
 import java.awt.event.KeyEvent;
 import java.awt.event.MouseAdapter;
@@ -466,4 +467,12 @@
         // unassign some standard shortcuts for JTable to allow upload / download
         InputMapUtils.unassignCtrlShiftUpDown(propertyTable, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
+        
+        // unassign some standard shortcuts for correct copy-pasting, fix #8508
+        propertyTable.setTransferHandler(null);
+  
+        propertyTable.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
+                .put(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK),"onCopy");
+        propertyTable.getActionMap().put("onCopy",copyKeyValueAction);
+
         // allow using enter to add tags for all look&feel configurations
         InputMapUtils.enableEnter(this.btnAdd);