Index: /trunk/src/org/openstreetmap/josm/gui/dialogs/properties/RelationRoleEditor.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/dialogs/properties/RelationRoleEditor.java	(revision 17556)
+++ /trunk/src/org/openstreetmap/josm/gui/dialogs/properties/RelationRoleEditor.java	(revision 17557)
@@ -46,5 +46,5 @@
         }
         final List<RelationMember> newMembers = relation.getMembers();
-        newMembers.replaceAll(m -> members.contains(m) ? new RelationMember(newRole, m.getMember()) : m);
+        newMembers.replaceAll(m -> members.contains(m) ? new RelationMember(Utils.strip(newRole), m.getMember()) : m);
         UndoRedoHandler.getInstance().add(new ChangeMembersCommand(relation, newMembers));
     }