diff --git a/protege-editor-core/src/main/java/org/protege/editor/core/ui/util/UIUtil.java b/protege-editor-core/src/main/java/org/protege/editor/core/ui/util/UIUtil.java
index 974bc768a..b0dd495b9 100644
--- a/protege-editor-core/src/main/java/org/protege/editor/core/ui/util/UIUtil.java
+++ b/protege-editor-core/src/main/java/org/protege/editor/core/ui/util/UIUtil.java
@@ -7,8 +7,9 @@
 import org.protege.editor.core.platform.apple.MacUIUtil;
 import org.protege.editor.core.prefs.Preferences;
 import org.protege.editor.core.prefs.PreferencesManager;
-import org.protege.editor.core.ui.workspace.WorkspaceManager;
 
+import javax.annotation.Nonnull;
+import javax.swing.FocusManager;
 import javax.swing.*;
 import javax.swing.filechooser.FileFilter;
 import java.awt.*;
@@ -18,6 +19,7 @@
 import java.util.Collection;
 import java.util.Optional;
 import java.util.Set;
+import java.util.stream.Stream;
 
 
 /**
@@ -25,7 +27,7 @@
  * The University Of Manchester<br>
  * Medical Informatics Group<br>
  * Date: Apr 2, 2006<br><br>
-
+ *
  * matthew.horridge@cs.man.ac.uk<br>
  * www.cs.man.ac.uk/~horridgm<br><br>
  */
@@ -39,32 +41,23 @@ public class UIUtil {
 
     public static final String FILE_URI_SCHEME = "file";
 
-    public static String getCurrentFileDirectory() {
-        String dir = "~";
-        Preferences p = PreferencesManager.getInstance().getApplicationPreferences(FILE_PREFERENCES_KEY);
-        dir = p.getString(CURRENT_FILE_DIRECTORY_KEY, dir);
-        return dir;
-    }
-
-
-    public static void setCurrentFileDirectory(String dir) {
-        Preferences p = PreferencesManager.getInstance().getApplicationPreferences(FILE_PREFERENCES_KEY);
-        p.putString(CURRENT_FILE_DIRECTORY_KEY, dir);
-    }
-
     /**
-     * 
      * @param parent
      * @param title
      * @param extensions
      * @deprecated Use openFile(Window parent, String title, final String description, final Set<String> extensions)
      */
     @Deprecated
-    public static File openFile(Component parent, String title, Set<String> extensions) {
+    public static File openFile(Component parent,
+                                String title,
+                                Set<String> extensions) {
         return openFile(parent, title, null, extensions);
     }
-    
-    public static File openFile(Component parent, String title, final String description, final Set<String> extensions) {
+
+    public static File openFile(Component parent,
+                                String title,
+                                final String description,
+                                final Set<String> extensions) {
         Window parentWindow;
         if(parent instanceof Window) {
             parentWindow = (Window) parent;
@@ -76,11 +69,11 @@ else if(parent == null) {
         else {
             parentWindow = SwingUtilities.getWindowAncestor(parent);
         }
-        if (OSUtils.isOSX() && parentWindow != null) {
+        if(OSUtils.isOSX() && parentWindow != null) {
             return MacUIUtil.openFile(parentWindow, title, extensions);
         }
         JFileChooser fileDialog = new JFileChooser(getCurrentFileDirectory());
-        if (extensions != null && !extensions.isEmpty()) {
+        if(extensions != null && !extensions.isEmpty()) {
             fileDialog.setFileFilter(new FileFilter() {
 
                 @Override
@@ -90,13 +83,13 @@ public String getDescription() {
 
                 @Override
                 public boolean accept(File f) {
-                    if (extensions.isEmpty() || f.isDirectory()) {
+                    if(extensions.isEmpty() || f.isDirectory()) {
                         return true;
                     }
                     else {
                         String name = f.getName();
-                        for (String ext : extensions) {
-                            if (name.toLowerCase().endsWith(ext.toLowerCase())) {
+                        for(String ext : extensions) {
+                            if(name.toLowerCase().endsWith(ext.toLowerCase())) {
                                 return true;
                             }
                         }
@@ -108,8 +101,8 @@ public boolean accept(File f) {
         fileDialog.setDialogType(JFileChooser.OPEN_DIALOG);
         int retVal = fileDialog.showOpenDialog(parent);
         File f;
-        if (retVal == JFileChooser.APPROVE_OPTION && (f = fileDialog.getSelectedFile()) != null) {
-            if (f.getParent() != null) {
+        if(retVal == JFileChooser.APPROVE_OPTION && (f = fileDialog.getSelectedFile()) != null) {
+            if(f.getParent() != null) {
                 setCurrentFileDirectory(f.getParent());
             }
             return f;
@@ -119,8 +112,19 @@ public boolean accept(File f) {
         }
     }
 
+    public static String getCurrentFileDirectory() {
+        String dir = "~";
+        Preferences p = PreferencesManager.getInstance().getApplicationPreferences(FILE_PREFERENCES_KEY);
+        dir = p.getString(CURRENT_FILE_DIRECTORY_KEY, dir);
+        return dir;
+    }
+
+    public static void setCurrentFileDirectory(String dir) {
+        Preferences p = PreferencesManager.getInstance().getApplicationPreferences(FILE_PREFERENCES_KEY);
+        p.putString(CURRENT_FILE_DIRECTORY_KEY, dir);
+    }
+
     /**
-     *
      * @param parent
      * @param title
      * @param extensions
@@ -128,11 +132,18 @@ public boolean accept(File f) {
      * @deprecated Use saveFile(Window parent, String title, final String description, final Set<String> extensions, String initialName)
      */
     @Deprecated
-    public static File saveFile(Component parent, String title, Set<String> extensions, String initialName) {
+    public static File saveFile(Component parent,
+                                String title,
+                                Set<String> extensions,
+                                String initialName) {
         return saveFile(parent, title, null, extensions, initialName);
     }
 
-    public static File saveFile(Component parent, String title, final String description, final Set<String> extensions, String initialName) {
+    public static File saveFile(Component parent,
+                                String title,
+                                final String description,
+                                final Set<String> extensions,
+                                String initialName) {
         Window parentWindow;
         if(parent instanceof Window) {
             parentWindow = (Window) parent;
@@ -140,12 +151,12 @@ public static File saveFile(Component parent, String title, final String descrip
         else {
             parentWindow = SwingUtilities.getWindowAncestor(parent);
         }
-        if (OSUtils.isOSX() && parentWindow != null) {
+        if(OSUtils.isOSX() && parentWindow != null) {
             return MacUIUtil.saveFile(parentWindow, title, extensions, initialName);
         }
         JFileChooser fileDialog = new JFileChooser(getCurrentFileDirectory());
         fileDialog.setDialogTitle(title);
-        if (extensions != null && !extensions.isEmpty()) {
+        if(extensions != null && !extensions.isEmpty()) {
             fileDialog.setFileFilter(new FileFilter() {
 
                 @Override
@@ -155,13 +166,13 @@ public String getDescription() {
 
                 @Override
                 public boolean accept(File f) {
-                    if (extensions.isEmpty() || f.isDirectory()) {
+                    if(extensions.isEmpty() || f.isDirectory()) {
                         return true;
                     }
                     else {
                         String name = f.getName();
-                        for (String ext : extensions) {
-                            if (name.toLowerCase().endsWith(ext.toLowerCase())) {
+                        for(String ext : extensions) {
+                            if(name.toLowerCase().endsWith(ext.toLowerCase())) {
                                 return true;
                             }
                         }
@@ -171,14 +182,14 @@ public boolean accept(File f) {
             });
         }
         fileDialog.setDialogType(JFileChooser.SAVE_DIALOG);
-        if (initialName != null) {
+        if(initialName != null) {
             fileDialog.setSelectedFile(new File(initialName));
         }
         int retVal = fileDialog.showSaveDialog(parent);
 
         File f = null;
-        if (retVal == JFileChooser.APPROVE_OPTION && (f  = fileDialog.getSelectedFile()) != null) {
-            if (f.getParent() != null) {
+        if(retVal == JFileChooser.APPROVE_OPTION && (f = fileDialog.getSelectedFile()) != null) {
+            if(f.getParent() != null) {
                 setCurrentFileDirectory(f.getParent());
             }
             return f;
@@ -192,17 +203,23 @@ public boolean accept(File f) {
      * @deprecated Use saveFile(Window parent, String title, String description, Set<String> extensions)
      */
     @Deprecated
-    public static File saveFile(Window parent, String title, Set<String> extensions) {
+    public static File saveFile(Window parent,
+                                String title,
+                                Set<String> extensions) {
         return saveFile(parent, title, null, extensions, null);
     }
 
-    public static File saveFile(Window parent, String title, String description, Set<String> extensions) {
+    public static File saveFile(Window parent,
+                                String title,
+                                String description,
+                                Set<String> extensions) {
         return saveFile(parent, title, description, extensions, null);
     }
 
 
-    public static File chooseFolder(Component parent, String title) {
-        if (System.getProperty("os.name").contains("OS X")) {
+    public static File chooseFolder(Component parent,
+                                    String title) {
+        if(System.getProperty("os.name").contains("OS X")) {
             return MacUIUtil.chooseOSXFolder(parent, title);
         }
         JFileChooser chooser = new JFileChooser();
@@ -211,10 +228,10 @@ public static File chooseFolder(Component parent, String title) {
         chooser.setDialogTitle(title);
         chooser.setDialogType(JFileChooser.OPEN_DIALOG);
         chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
-        if (chooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION) {
+        if(chooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION) {
             File selectedDirectory = chooser.getSelectedFile();
-            if (selectedDirectory != null) {
-            	setCurrentFileDirectory(selectedDirectory.toString());
+            if(selectedDirectory != null) {
+                setCurrentFileDirectory(selectedDirectory.toString());
             }
             return selectedDirectory;
         }
@@ -232,37 +249,36 @@ public static void openRequest(OpenRequestHandler handler) throws Exception {
                 return;
             }
         }
-        int ret = JOptionPane.showConfirmDialog(handler.getCurrentWorkspace(),
-                                      "Do you want to open the ontology in the current window?",
-                                      "Open in current window",
-                                      JOptionPane.YES_NO_CANCEL_OPTION,
-                                      JOptionPane.QUESTION_MESSAGE);
+        int ret = JOptionPane.showConfirmDialog(handler.getCurrentWorkspace(), "Do you want to open the ontology in the current window?", "Open in current window", JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE);
 
-        if (ret == JOptionPane.YES_OPTION){
+        if(ret == JOptionPane.YES_OPTION) {
             handler.openInCurrentWorkspace();
         }
-        else if (ret == JOptionPane.NO_OPTION){
+        else if(ret == JOptionPane.NO_OPTION) {
             handler.openInNewWorkspace();
         }
     }
-    
-    public static <T> Collection<T> getComponentsExtending(Component component, Class<? extends T> clazz) {
-    	Collection<T> components = new ArrayList<>();
-    	addComponentsExtending(component, clazz, components);
-    	return components;
+
+    public static <T> Collection<T> getComponentsExtending(Component component,
+                                                           Class<? extends T> clazz) {
+        Collection<T> components = new ArrayList<>();
+        addComponentsExtending(component, clazz, components);
+        return components;
     }
-    
-    private static <T> void addComponentsExtending(Component component, Class<? extends T> clazz, Collection<T> components) {
-        if (component instanceof Container) {
+
+    private static <T> void addComponentsExtending(Component component,
+                                                   Class<? extends T> clazz,
+                                                   Collection<T> components) {
+        if(component instanceof Container) {
             Container container = (Container) component;
             int nSubcomponents = container.getComponentCount();
-            for (int i = 0; i < nSubcomponents; ++i) {
+            for(int i = 0; i < nSubcomponents; ++i) {
                 Component subComponent = container.getComponent(i);
-                if (clazz.isAssignableFrom(subComponent.getClass())) {
-                	components.add(clazz.cast(subComponent));
+                if(clazz.isAssignableFrom(subComponent.getClass())) {
+                    components.add(clazz.cast(subComponent));
                 }
                 else {
-                	addComponentsExtending(subComponent, clazz, components);
+                    addComponentsExtending(subComponent, clazz, components);
                 }
             }
         }
@@ -271,6 +287,7 @@ private static <T> void addComponentsExtending(Component component, Class<? exte
 
     /**
      * Tests to see if a URI represents a local file.
+     *
      * @param uri The URI.  May be <code>null</code>.
      * @return <code>true</code> if the URI represents a local file, otherwise <code>false</code>.
      */
@@ -285,12 +302,33 @@ public static boolean isLocalFile(URI uri) {
     /**
      * Determines whether the user is on Windows and if so whether the "high contrast" setting
      * is set to on.
+     *
      * @return {@code true} if on, otherwise {@code false}
      */
     public static boolean isHighContrastOn() {
         Toolkit toolkit = Toolkit.getDefaultToolkit();
-        Optional<Boolean> highContrast = Optional.ofNullable((Boolean)toolkit.getDesktopProperty( "win.highContrast.on" ));
+        Optional<Boolean> highContrast = Optional.ofNullable((Boolean) toolkit.getDesktopProperty("win.highContrast.on"));
         return highContrast.orElse(false);
     }
 
+
+    /**
+     * Determines if the specified rectangle is (at least partially) visible on
+     * a screen.
+     * @param rectangle The rectangle.
+     * @return true if the specified rectangle is partially or fully visible on some screen,
+     * otherwise false.
+     */
+    public static boolean isVisibleOnScreen(@Nonnull Rectangle rectangle) {
+        GraphicsEnvironment graphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
+        if(graphicsEnvironment.isHeadlessInstance()) {
+            return false;
+        }
+        GraphicsDevice[] screenDevices = graphicsEnvironment.getScreenDevices();
+        return Stream
+                .of(screenDevices)
+                .map(screenDevice -> screenDevice.getDefaultConfiguration().getBounds())
+                .anyMatch(screenBounds -> screenBounds.intersects(rectangle));
+    }
+
 }
diff --git a/protege-editor-core/src/main/java/org/protege/editor/core/ui/workspace/WorkspaceFrame.java b/protege-editor-core/src/main/java/org/protege/editor/core/ui/workspace/WorkspaceFrame.java
index 2a9dd8ebd..e41f8f3d1 100644
--- a/protege-editor-core/src/main/java/org/protege/editor/core/ui/workspace/WorkspaceFrame.java
+++ b/protege-editor-core/src/main/java/org/protege/editor/core/ui/workspace/WorkspaceFrame.java
@@ -7,6 +7,7 @@
 import org.protege.editor.core.ui.action.ProtegeAction;
 import org.protege.editor.core.ui.menu.MenuBuilder;
 import org.protege.editor.core.ui.util.Icons;
+import org.protege.editor.core.ui.util.UIUtil;
 
 import javax.swing.*;
 import java.awt.*;
@@ -88,15 +89,20 @@ public void dispose() {
 
 
     protected void restoreMetrics() {
-        Preferences p = PreferencesManager.getInstance().getApplicationPreferences(getClass().getName());
-        int w = p.getInt(SIZE_X, DEFAULT_WIDTH);
-        int h = p.getInt(SIZE_Y, DEFAULT_HEIGHT);
+        Preferences prefs = PreferencesManager.getInstance().getApplicationPreferences(getClass().getName());
+        int w = prefs.getInt(SIZE_X, DEFAULT_WIDTH);
+        int h = prefs.getInt(SIZE_Y, DEFAULT_HEIGHT);
         setSize(w, h);
         Point defLoc = getDefaultLocation();
-        int x = p.getInt(LOC_X, defLoc.x);
-        int y = p.getInt(LOC_Y, defLoc.y);
-        setLocation(x, y);
-        setSize(w, h);
+        int x = prefs.getInt(LOC_X, defLoc.x);
+        int y = prefs.getInt(LOC_Y, defLoc.y);
+        Rectangle desiredRectangle = new Rectangle(x, y, w, h);
+        if(UIUtil.isVisibleOnScreen(desiredRectangle)) {
+            setLocation(x, y);
+        }
+        else {
+            setLocation(defLoc.x, defLoc.y);
+        }
     }
 
 
@@ -108,11 +114,12 @@ private Point getDefaultLocation() {
 
 
     protected void saveMetrics() {
-        Preferences p = PreferencesManager.getInstance().getApplicationPreferences(getClass().getName());
-        p.putInt(LOC_X, getLocation().x);
-        p.putInt(LOC_Y, getLocation().y);
-        p.putInt(SIZE_X, getSize().width);
-        p.putInt(SIZE_Y, getSize().height);
+        Preferences prefs = PreferencesManager.getInstance().getApplicationPreferences(getClass().getName());
+        Point location = getLocation();
+        prefs.putInt(LOC_X, location.x);
+        prefs.putInt(LOC_Y, location.y);
+        prefs.putInt(SIZE_X, getSize().width);
+        prefs.putInt(SIZE_Y, getSize().height);
     }