diff --git a/src/app/3d/qgs3dmapconfigwidget.cpp b/src/app/3d/qgs3dmapconfigwidget.cpp
index 7b32371b4e0..1e06d5ef630 100644
--- a/src/app/3d/qgs3dmapconfigwidget.cpp
+++ b/src/app/3d/qgs3dmapconfigwidget.cpp
@@ -81,7 +81,7 @@ Qgs3DMapConfigWidget::Qgs3DMapConfigWidget( Qgs3DMapSettings *map, QgsMapCanvas
     QgsMeshTerrainGenerator *meshTerrain = static_cast<QgsMeshTerrainGenerator *>( terrainGen );
     cboTerrainLayer->setFilters( QgsMapLayerProxyModel::MeshLayer );
     cboTerrainLayer->setLayer( meshTerrain->meshLayer() );
-    mMeshSymbolWidget->setLayer( meshTerrain->meshLayer() );
+    mMeshSymbolWidget->setLayer( meshTerrain->meshLayer(), false );
     mMeshSymbolWidget->setSymbol( meshTerrain->symbol() );
     spinTerrainScale->setValue( meshTerrain->symbol().verticaleScale() );
   }
@@ -277,12 +277,11 @@ void Qgs3DMapConfigWidget::onTerrainLayerChanged()
     QgsMeshLayer *meshLayer = qobject_cast<QgsMeshLayer *>( cboTerrainLayer->currentLayer() );
     if ( meshLayer )
     {
+      QgsMeshLayer *oldLayer = mMeshSymbolWidget->meshLayer();
 
       mMeshSymbolWidget->setLayer( meshLayer, false );
-      if ( mMeshSymbolWidget->symbol().colorRampShader().colorRampItemList().count() == 0 )
-      {
+      if ( oldLayer != meshLayer )
         mMeshSymbolWidget->reloadColorRampShaderMinMax();
-      }
     }
   }
 }
diff --git a/src/app/3d/qgsmesh3dsymbolwidget.cpp b/src/app/3d/qgsmesh3dsymbolwidget.cpp
index de67c7fdefe..45d55a7d2c4 100644
--- a/src/app/3d/qgsmesh3dsymbolwidget.cpp
+++ b/src/app/3d/qgsmesh3dsymbolwidget.cpp
@@ -63,6 +63,8 @@ void QgsMesh3dSymbolWidget::setSymbol( const QgsMesh3DSymbol &symbol )
   mComboBoxTextureType->setCurrentIndex( symbol.renderingStyle() );
   mMeshSingleColorButton->setColor( symbol.singleMeshColor() );
   mColorRampShaderWidget->setFromShader( symbol.colorRampShader() );
+  mColorRampShaderWidget->setMinimumMaximumAndClassify( symbol.colorRampShader().minimumValue(),
+      symbol.colorRampShader().maximumValue() );
 
   setColorRampMinMax( symbol.colorRampShader().minimumValue(), symbol.colorRampShader().maximumValue() );
 }
@@ -90,6 +92,8 @@ void QgsMesh3dSymbolWidget::setLayer( QgsMeshLayer *meshLayer, bool updateSymbol
   reloadColorRampShaderMinMax(); //As the symbol is new, the Color ramp shader needs to be initialized with min max value
 }
 
+QgsMeshLayer *QgsMesh3dSymbolWidget::meshLayer() const {return mLayer;}
+
 double QgsMesh3dSymbolWidget::lineEditValue( const QLineEdit *lineEdit ) const
 {
   if ( lineEdit->text().isEmpty() )
diff --git a/src/app/3d/qgsmesh3dsymbolwidget.h b/src/app/3d/qgsmesh3dsymbolwidget.h
index 66c50c4431c..486434c5744 100644
--- a/src/app/3d/qgsmesh3dsymbolwidget.h
+++ b/src/app/3d/qgsmesh3dsymbolwidget.h
@@ -34,6 +34,7 @@ class QgsMesh3dSymbolWidget : public QWidget, private Ui::QgsMesh3dPropsWidget
     QgsMesh3DSymbol symbol() const;
 
     void setLayer( QgsMeshLayer *meshLayer, bool updateSymbol = true );
+    QgsMeshLayer *meshLayer() const;
     void setSymbol( const QgsMesh3DSymbol &symbol );
 
     void enableVerticalSetting( bool isEnable );