src/java.desktop/macosx/classes/com/apple/laf/AquaFileChooserUI.java

@@ -1298,16 +1298,16 @@
             String prop = e.getPropertyName();
             if(prop == JFileChooser.CHOOSABLE_FILE_FILTER_CHANGED_PROPERTY) {
                 filters = (FileFilter[]) e.getNewValue();
                 fireContentsChanged(this, -1, -1);
             } else if (prop == JFileChooser.FILE_FILTER_CHANGED_PROPERTY) {
-                fireContentsChanged(this, -1, -1);
+                setSelectedItem(e.getNewValue());
             }
         }
 
         public void setSelectedItem(Object filter) {
-            if(filter != null) {
+            if (filter != null && !containsFileFilter(filter)) {
                 getFileChooser().setFileFilter((FileFilter) filter);
                 fireContentsChanged(this, -1, -1);
             }
         }
 

@@ -1351,21 +1351,28 @@
                 return null;
             }
         }
     }
 
+    private boolean containsFileFilter(Object fileFilter) {
+        return Objects.equals(fileFilter, getFileChooser().getFileFilter());
+    }
+
     /**
      * Acts when FilterComboBox has changed the selected item.
      */
     @SuppressWarnings("serial") // Superclass is not serializable across versions
     protected class FilterComboBoxAction extends AbstractAction {
         protected FilterComboBoxAction() {
             super("FilterComboBoxAction");
         }
 
         public void actionPerformed(final ActionEvent e) {
-            getFileChooser().setFileFilter((FileFilter) filterComboBox.getSelectedItem());
+            Object selectedFilter = filterComboBox.getSelectedItem();
+            if (!containsFileFilter(selectedFilter)) {
+                getFileChooser().setFileFilter((FileFilter) selectedFilter);
+            }
         }
     }
 
     /**
      * Acts when DirectoryComboBox has changed the selected item.