Index: trunk/src/org/openstreetmap/josm/gui/dialogs/ValidatorDialog.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/dialogs/ValidatorDialog.java	(revision 12301)
+++ trunk/src/org/openstreetmap/josm/gui/dialogs/ValidatorDialog.java	(revision 12302)
@@ -50,4 +50,5 @@
 import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeListener;
 import org.openstreetmap.josm.gui.layer.OsmDataLayer;
+import org.openstreetmap.josm.gui.layer.ValidatorLayer;
 import org.openstreetmap.josm.gui.preferences.validator.ValidatorPreference;
 import org.openstreetmap.josm.gui.progress.ProgressMonitor;
@@ -641,7 +642,6 @@
                 SwingUtilities.invokeAndWait(() -> {
                     Main.main.undoRedo.afterAdd();
-                    Main.map.repaint();
+                    Main.getLayerManager().getLayersOfType(ValidatorLayer.class).forEach(ValidatorLayer::invalidate);
                     tree.resetErrors();
-                    ds.fireSelectionChanged();
                 });
             } catch (InterruptedException | InvocationTargetException e) {