diff --git a/src/app/3d/qgs3dmapcanvaswidget.cpp b/src/app/3d/qgs3dmapcanvaswidget.cpp
index c66bb1e9e4e0..5e83abca2bb2 100644
--- a/src/app/3d/qgs3dmapcanvaswidget.cpp
+++ b/src/app/3d/qgs3dmapcanvaswidget.cpp
@@ -511,7 +511,11 @@ void Qgs3DMapCanvasWidget::configure()
                                    || map->terrainGenerator()->type() == QgsTerrainGenerator::Mesh );
   };
 
-  connect( buttons, &QDialogButtonBox::rejected, mConfigureDialog, &QDialog::reject );
+  connect( buttons, &QDialogButtonBox::rejected, mConfigureDialog, [ = ]()
+  {
+    configWidget->reject();
+    mConfigureDialog->reject();
+  } );
   connect( buttons, &QDialogButtonBox::clicked, mConfigureDialog, [ = ]( QAbstractButton * button )
   {
     if ( button == buttons->button( QDialogButtonBox::Apply ) || button == buttons->button( QDialogButtonBox::Ok ) )
diff --git a/src/app/3d/qgs3dmapconfigwidget.cpp b/src/app/3d/qgs3dmapconfigwidget.cpp
index 75f46c8eca03..976f393f3278 100644
--- a/src/app/3d/qgs3dmapconfigwidget.cpp
+++ b/src/app/3d/qgs3dmapconfigwidget.cpp
@@ -17,13 +17,13 @@
 
 #include "qgs3dmapsettings.h"
 #include "qgsdemterraingenerator.h"
+#include "qgsextent3dwidget.h"
 #include "qgsflatterraingenerator.h"
 #include "qgsonlineterraingenerator.h"
 #include "qgsmeshterraingenerator.h"
 #include "qgs3dutils.h"
 #include "qgsguiutils.h"
 #include "qgsmapcanvas.h"
-#include "qgsorientedbox3d.h"
 #include "qgsrasterlayer.h"
 #include "qgsmeshlayer.h"
 #include "qgsproject.h"
@@ -248,6 +248,7 @@ Qgs3DMapConfigWidget::Qgs3DMapConfigWidget( Qgs3DMapSettings *map, QgsMapCanvas
   const QgsOrientedBox3D sceneBox = mMap->box();
   const double rotationZ = sceneBox.eulerAngles().z();
   QgsRectangle horizontalExtent = mMap->extent();
+  mOldSceneBox = sceneBox;
   if ( rotationZ != 0.0 )
   {
     // rotation is counter-clockwise
@@ -260,6 +261,21 @@ Qgs3DMapConfigWidget::Qgs3DMapConfigWidget( Qgs3DMapSettings *map, QgsMapCanvas
   mExtent3D->setRotation( rotationZ );
   mExtent3D->setShowIn2DView( mMap->showExtentIn2DView() );
 
+  connect( mExtent3D, &QgsExtent3DWidget::extentChanged, this, [ = ]
+  {
+    updateExtent3D();
+  } );
+
+  connect( mExtent3D, &QgsExtent3DWidget::rotationChanged, this, [ = ]
+  {
+    updateExtent3D();
+  } );
+
+  connect( mExtent3D, &QgsExtent3DWidget::showIn2DViewChanged, this, [ = ]
+  {
+    mMap->setShowExtentIn2DView( mExtent3D->showIn2DView() );
+  } );
+
   onTerrainTypeChanged();
 }
 
@@ -272,19 +288,7 @@ Qgs3DMapConfigWidget::~Qgs3DMapConfigWidget()
 
 void Qgs3DMapConfigWidget::apply()
 {
-  QgsBox3D sceneAABox = QgsBox3D( mExtent3D->extent() );
-  sceneAABox.setZMinimum( Qgs3DMapSettings::DEFAULT_MIN_DEPTH );
-  sceneAABox.setZMaximum( Qgs3DMapSettings::DEFAULT_MAX_DEPTH );
-  QgsOrientedBox3D sceneBox = QgsOrientedBox3D::fromBox3D( sceneAABox );
-
-  if ( mExtent3D->rotation() != 0.0 )
-  {
-    // rotation is counter-clockwise
-    sceneBox = Qgs3DUtils::rotateOrientedBoundingBox3D( sceneBox, -mExtent3D->rotation() );
-  }
-
-  mMap->setBox( sceneBox );
-  updateTerrain();
+  updateExtent3D();
 
   mMap->setFieldOfView( static_cast<float>( spinCameraFieldOfView->value() ) );
   mMap->setProjectionType( cboCameraProjectionType->currentData().value< Qt3DRender::QCameraLens::ProjectionType >() );
@@ -410,6 +414,18 @@ void Qgs3DMapConfigWidget::updateTerrain()
   }
 }
 
+void Qgs3DMapConfigWidget::reject()
+{
+  QgsOrientedBox3D currentBox = updateExtent3D( false );
+  if ( currentBox == mOldSceneBox )
+  {
+    return;
+  }
+
+  mMap->setBox( mOldSceneBox );
+  updateTerrain();
+}
+
 void Qgs3DMapConfigWidget::onTerrainTypeChanged()
 {
   const QgsTerrainGenerator::Type genType = static_cast<QgsTerrainGenerator::Type>( cboTerrainType->currentData().toInt() );
@@ -555,3 +571,26 @@ void Qgs3DMapConfigWidget::on3DAxisChanged()
 
   mMap->set3DAxisSettings( s );
 }
+
+QgsOrientedBox3D Qgs3DMapConfigWidget::updateExtent3D( bool doUpdate )
+{
+  QgsBox3D sceneAABox = QgsBox3D( mExtent3D->extent() );
+  sceneAABox.setZMinimum( Qgs3DMapSettings::DEFAULT_MIN_DEPTH );
+  sceneAABox.setZMaximum( Qgs3DMapSettings::DEFAULT_MAX_DEPTH );
+  QgsOrientedBox3D sceneBox = QgsOrientedBox3D::fromBox3D( sceneAABox );
+
+  const double rotationZ = mExtent3D->rotation();
+  if ( rotationZ != 0 )
+  {
+    // rotation is counter-clockwise
+    sceneBox = Qgs3DUtils::rotateOrientedBoundingBox3D( sceneBox, -rotationZ );
+  }
+
+  if ( doUpdate )
+  {
+    mMap->setBox( sceneBox );
+    updateTerrain();
+  }
+
+  return sceneBox;
+}
diff --git a/src/app/3d/qgs3dmapconfigwidget.h b/src/app/3d/qgs3dmapconfigwidget.h
index 822cb35a47b8..1faa07926e25 100644
--- a/src/app/3d/qgs3dmapconfigwidget.h
+++ b/src/app/3d/qgs3dmapconfigwidget.h
@@ -20,6 +20,8 @@
 
 #include <ui_map3dconfigwidget.h>
 
+#include "qgsorientedbox3d.h"
+
 class QCheckBox;
 class Qgs3DMapSettings;
 class QgsMapCanvas;
@@ -40,6 +42,8 @@ class Qgs3DMapConfigWidget : public QWidget, private Ui::Map3DConfigWidget
 
     void apply();
 
+    void reject();
+
   signals:
 
     void isValidChanged( bool valid );
@@ -60,8 +64,11 @@ class Qgs3DMapConfigWidget : public QWidget, private Ui::Map3DConfigWidget
     QgsShadowRenderingSettingsWidget *mShadowSettingsWidget = nullptr;
     QCheckBox *mShowExtentIn2DViewCheckbox = nullptr;
 
+    QgsOrientedBox3D mOldSceneBox;
+
     void init3DAxisPage();
     void updateTerrain();
+    QgsOrientedBox3D updateExtent3D( bool doUpdate = true );
 };
 
 #endif // QGS3DMAPCONFIGWIDGET_H
diff --git a/src/app/3d/qgsextent3dwidget.cpp b/src/app/3d/qgsextent3dwidget.cpp
index b0b238dbb512..7c9168a5c330 100644
--- a/src/app/3d/qgsextent3dwidget.cpp
+++ b/src/app/3d/qgsextent3dwidget.cpp
@@ -83,6 +83,7 @@ QgsExtent3DWidget::QgsExtent3DWidget( QWidget *parent )
 
   connect( mRotationSpinBox, qOverload<int>( &QgsSpinBox::valueChanged ), this, &QgsExtent3DWidget::onRotationChanged );
   connect( mRotationSlider, &QSlider::valueChanged, this, &QgsExtent3DWidget::onRotationChanged );
+  connect( mPreviewExtentCheckBox, &QCheckBox::toggled, this, [ = ] { emit showIn2DViewChanged(); } );
 }
 
 void QgsExtent3DWidget::setMapCanvas( QgsMapCanvas *canvas )
@@ -320,6 +321,7 @@ void QgsExtent3DWidget::setOutputExtent( const QgsRectangle &rectangle, const Qg
   }
 
   updateTitle( state );
+  emit extentChanged();
 }
 
 void QgsExtent3DWidget::updateTitle( const QgsExtentWidget::ExtentState &state )
@@ -359,6 +361,7 @@ QgsRectangle QgsExtent3DWidget::extent() const
 void QgsExtent3DWidget::onRotationChanged( int rotation )
 {
   setRotation( rotation );
+  emit rotationChanged();
 }
 
 void QgsExtent3DWidget::setRotation( double rotation )
diff --git a/src/app/3d/qgsextent3dwidget.h b/src/app/3d/qgsextent3dwidget.h
index a9b8e625f73d..4c8bc62dfca0 100644
--- a/src/app/3d/qgsextent3dwidget.h
+++ b/src/app/3d/qgsextent3dwidget.h
@@ -68,6 +68,9 @@ class QgsExtent3DWidget : public QgsCollapsibleGroupBox, private Ui::QgsExtent3D
   signals:
 
     void toggleDialogVisibility( bool visible );
+    void extentChanged();
+    void rotationChanged();
+    void showIn2DViewChanged();
 
   private slots: