Index: Core/Gui/src/Core.Gui/Forms/MainWindow/MainWindow.xaml.cs
===================================================================
diff -u -r12a7ef6145b2756ca916adbdfb7b15a4d4f0d90c -rbb161efba7c8cecbcb0822b425010ab9a2dbb1f2
--- Core/Gui/src/Core.Gui/Forms/MainWindow/MainWindow.xaml.cs	(.../MainWindow.xaml.cs)	(revision 12a7ef6145b2756ca916adbdfb7b15a4d4f0d90c)
+++ Core/Gui/src/Core.Gui/Forms/MainWindow/MainWindow.xaml.cs	(.../MainWindow.xaml.cs)	(revision bb161efba7c8cecbcb0822b425010ab9a2dbb1f2)
@@ -405,16 +405,20 @@
         {
             commands.StorageCommands.CreateNewProject();
             ValidateItems();
+
+            CloseBackstage();
         }
 
         private void OnSaveProject(object obj)
         {
             commands.StorageCommands.SaveProject();
+            CloseBackstage();
         }
 
         private void OnSaveProjectAs(object obj)
         {
             commands.StorageCommands.SaveProjectAs();
+            CloseBackstage();
         }
 
         private void OnOpenProject(object obj)
@@ -424,7 +428,17 @@
             {
                 commands.StorageCommands.OpenExistingProject(projectPath);
             }
+            CloseBackstage();
         }
+        
+        private void CloseBackstage()
+        {
+            if (BackstageDockPanel.Visibility == Visibility.Visible)
+            {
+                MainDockPanel.Visibility = Visibility.Visible;
+                BackstageDockPanel.Visibility = Visibility.Collapsed;
+            }
+        }
 
         private void OnCloseApplication(object obj)
         {
Index: Core/Gui/test/Core.Gui.Test/Forms/MainWindow/MainWindowTest.cs
===================================================================
diff -u -r2ccd820a20c579a55a3752d370c30781624e6dee -rbb161efba7c8cecbcb0822b425010ab9a2dbb1f2
--- Core/Gui/test/Core.Gui.Test/Forms/MainWindow/MainWindowTest.cs	(.../MainWindowTest.cs)	(revision 2ccd820a20c579a55a3752d370c30781624e6dee)
+++ Core/Gui/test/Core.Gui.Test/Forms/MainWindow/MainWindowTest.cs	(.../MainWindowTest.cs)	(revision bb161efba7c8cecbcb0822b425010ab9a2dbb1f2)
@@ -922,7 +922,9 @@
         }
 
         [Test]
-        public void GivenMainWindow_WhenNewProjectIsCalled_ThenCreateNewProject()
+        [TestCase(true)]
+        [TestCase(false)]
+        public void GivenMainWindow_WhenNewProjectIsCalled_ThenCreateNewProject(bool backstageVisible)
         {
             // Given
             var mocks = new MockRepository();
@@ -942,16 +944,26 @@
 
                 mainWindow.SetGui(gui);
 
+                if (backstageVisible)
+                {
+                    mainWindow.ToggleBackstageCommand.Execute(null);
+                }
+
                 // When
                 mainWindow.NewProjectCommand.Execute(null);
+                
+                // Then
+                Assert.AreEqual(Visibility.Collapsed, mainWindow.BackstageDockPanel.Visibility);
+                Assert.AreEqual(Visibility.Visible, mainWindow.MainDockPanel.Visibility);
             }
 
-            // Then
             mocks.VerifyAll();
         }
 
         [Test]
-        public void GivenMainWindow_WhenSaveProjectIsCalled_ThenProjectSaved()
+        [TestCase(true)]
+        [TestCase(false)]
+        public void GivenMainWindow_WhenSaveProjectIsCalled_ThenProjectSaved(bool backstageVisible)
         {
             // Given
             string directoryPath = TestHelper.GetScratchPadPath(nameof(MainWindowTest));
@@ -992,18 +1004,28 @@
                     gui.Run();
 
                     mainWindow.SetGui(gui);
+                    
+                    if (backstageVisible)
+                    {
+                        mainWindow.ToggleBackstageCommand.Execute(null);
+                    }
 
                     // When
                     mainWindow.SaveProjectCommand.Execute(null);
+                    
+                    // Then
+                    Assert.AreEqual(Visibility.Collapsed, mainWindow.BackstageDockPanel.Visibility);
+                    Assert.AreEqual(Visibility.Visible, mainWindow.MainDockPanel.Visibility);
                 }
 
-                // Then
                 mocks.VerifyAll();
             }
         }
 
         [Test]
-        public void GivenMainWindow_WhenSaveProjectAsIsCalled_ThenProjectSaved()
+        [TestCase(true)]
+        [TestCase(false)]
+        public void GivenMainWindow_WhenSaveProjectAsIsCalled_ThenProjectSaved(bool backstageVisible)
         {
             // Given
             string directoryPath = TestHelper.GetScratchPadPath(nameof(MainWindowTest));
@@ -1044,18 +1066,28 @@
                     gui.Run();
 
                     mainWindow.SetGui(gui);
+                    
+                    if (backstageVisible)
+                    {
+                        mainWindow.ToggleBackstageCommand.Execute(null);
+                    }
 
                     // When
                     mainWindow.SaveProjectAsCommand.Execute(null);
+                    
+                    // Then
+                    Assert.AreEqual(Visibility.Collapsed, mainWindow.BackstageDockPanel.Visibility);
+                    Assert.AreEqual(Visibility.Visible, mainWindow.MainDockPanel.Visibility);
                 }
 
-                // Then
                 mocks.VerifyAll();
             }
         }
 
         [Test]
-        public void GivenMainWindow_WhenOpenProjectIsCalled_ThenProjectOpened()
+        [TestCase(true)]
+        [TestCase(false)]
+        public void GivenMainWindow_WhenOpenProjectIsCalled_ThenProjectOpened(bool backstageVisible)
         {
             // Given
             string directoryPath = TestHelper.GetTestDataPath(TestDataPath.Core.Gui);
@@ -1092,12 +1124,20 @@
                 gui.Run();
 
                 mainWindow.SetGui(gui);
+                
+                if (backstageVisible)
+                {
+                    mainWindow.ToggleBackstageCommand.Execute(null);
+                }
 
                 // When
                 mainWindow.OpenProjectCommand.Execute(null);
+                
+                // Then
+                Assert.AreEqual(Visibility.Collapsed, mainWindow.BackstageDockPanel.Visibility);
+                Assert.AreEqual(Visibility.Visible, mainWindow.MainDockPanel.Visibility);
             }
 
-            // Then
             mocks.VerifyAll();
         }