Index: /trunk/src/org/openstreetmap/josm/gui/dialogs/relation/GenericRelationEditor.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/dialogs/relation/GenericRelationEditor.java	(revision 12079)
+++ /trunk/src/org/openstreetmap/josm/gui/dialogs/relation/GenericRelationEditor.java	(revision 12080)
@@ -60,4 +60,5 @@
 import org.openstreetmap.josm.gui.DefaultNameFormatter;
 import org.openstreetmap.josm.gui.MainMenu;
+import org.openstreetmap.josm.gui.ScrollViewport;
 import org.openstreetmap.josm.gui.datatransfer.ClipboardUtils;
 import org.openstreetmap.josm.gui.dialogs.relation.actions.AddSelectedAfterSelection;
@@ -465,5 +466,5 @@
         gc.weightx = 0.0;
         gc.weighty = 1.0;
-        pnl.add(leftButtonToolbar, gc);
+        pnl.add(new ScrollViewport(leftButtonToolbar, ScrollViewport.VERTICAL_DIRECTION), gc);
 
         gc.gridx = 1;
@@ -521,5 +522,6 @@
         gc.weightx = 0.0;
         gc.weighty = 1.0;
-        pnl2.add(buildSelectionControlButtonToolbar(memberTable, memberTableModel, selectionTableModel, re), gc);
+        pnl2.add(new ScrollViewport(buildSelectionControlButtonToolbar(memberTable, memberTableModel, selectionTableModel, re),
+                ScrollViewport.VERTICAL_DIRECTION), gc);
 
         gc.gridx = 1;