force repaint on category change

platform/vcs-impl/src/com/intellij/openapi/diff/impl/dir/DirDiffPanel.java

@@ -33,7 +33,6 @@ import com.intellij.ui.TableSpeedSearch;
 import com.intellij.ui.components.JBLabel;
 import com.intellij.ui.components.JBLoadingPanel;
 import com.intellij.ui.table.JBTable;
-import com.intellij.util.containers.Convertor;
 import com.intellij.util.ui.UIUtil;
 
 import javax.swing.*;
@@ -277,8 +276,6 @@ public class DirDiffPanel implements Disposable {
         myCurrentElement = element.getSource();
       } else {
         myDiffPanel.add(getErrorLabel(), BorderLayout.CENTER);
-        myDiffPanel.revalidate();
-        myDiffPanel.repaint();
       }
     } else {
       final DiffElement object;
@@ -293,14 +290,12 @@ public class DirDiffPanel implements Disposable {
         myCurrentElement = object;
         myDiffPanel.add(myViewComponent, BorderLayout.CENTER);
         DataManager.registerDataProvider(myDiffPanel, myCurrentElement.getDataProvider(project));
-        myDiffPanel.revalidate();
-        myDiffPanel.repaint();
       } else {
         myDiffPanel.add(getErrorLabel(), BorderLayout.CENTER);
-        myDiffPanel.revalidate();
-        myDiffPanel.repaint();
       }
     }
+    myDiffPanel.revalidate();
+    myDiffPanel.repaint();
   }
 
   private void registerCustomShortcuts(DirDiffToolbarActions actions, JPanel rootPanel) {

platform/vcs-impl/src/com/intellij/openapi/diff/impl/dir/DirDiffTableModel.java

@@ -113,6 +113,7 @@ public class DirDiffTableModel extends AbstractTableModel implements DirDiffMode
     myUpdating.set(false);
     selectFirstRow();
     myPanel.focusTable();
+    myPanel.update(true);
   }
 
   private void selectFirstRow() {