diff --git a/src/slic3r/GUI/GUI_Factories.cpp b/src/slic3r/GUI/GUI_Factories.cpp
index 3a51ac425..d71a128b0 100644
--- a/src/slic3r/GUI/GUI_Factories.cpp
+++ b/src/slic3r/GUI/GUI_Factories.cpp
@@ -555,8 +555,8 @@ void MenuFactory::append_menu_items_add_volume(wxMenu* menu)
         menu->Destroy(range_id);
 
     if (wxGetApp().get_mode() == comSimple) {
-        append_menu_item_add_text(menu, ModelVolumeType::MODEL_PART, false);
-        append_menu_item_add_text(menu, ModelVolumeType::NEGATIVE_VOLUME, false);
+        //append_menu_item_add_text(menu, ModelVolumeType::MODEL_PART, false);
+        //append_menu_item_add_text(menu, ModelVolumeType::NEGATIVE_VOLUME, false);
 
         append_menu_item(menu, wxID_ANY, _(ADD_VOLUME_MENU_ITEMS[int(ModelVolumeType::SUPPORT_ENFORCER)].first), "",
             [](wxCommandEvent&) { obj_list()->load_generic_subobject(L("Box"), ModelVolumeType::SUPPORT_ENFORCER); },
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index 6de339a7f..954f61813 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -2480,6 +2480,9 @@ bool ObjectList::is_splittable(bool to_objects)
         return false;
     }
 
+    if (wxGetApp().get_mode() == comSimple)
+        return false; // suppress to split to parts for simple mode
+
     ModelVolume* volume;
     if (!get_volume_by_item(item, volume) || !volume)
         return false;
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
index 0071e3450..82b5747cc 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
@@ -861,6 +861,9 @@ void GLGizmoEmboss::on_set_state()
         if (m_volume == nullptr) { 
             // reopen gizmo when new object is created
             GLGizmoBase::m_state = GLGizmoBase::Off;
+            if (wxGetApp().get_mode() == comSimple)
+                // It's impossible to add a part in simple mode
+                return;
             // start creating new object
             create_volume(ModelVolumeType::MODEL_PART);
         }
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 79ce8e4b1..1ab23b344 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -2641,7 +2641,6 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                 }
 
                 if (model.looks_like_multipart_object()) {
-                    //wxMessageDialog msg_dlg(q, _L(
                     MessageDialog msg_dlg(q, _L(
                         "This file contains several objects positioned at multiple heights.\n"
                         "Instead of considering them as multiple objects, should \n"
@@ -2652,10 +2651,9 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                     }
                 }
             }
-            else if ((wxGetApp().get_mode() == comSimple) && (type_3mf || type_any_amf) && model_has_advanced_features(model)) {
-                //wxMessageDialog msg_dlg(q, _L("This file cannot be loaded in a simple mode. Do you want to switch to an advanced mode?")+"\n",
+            if ((wxGetApp().get_mode() == comSimple) && (type_3mf || type_any_amf) && model_has_advanced_features(model)) {
                 MessageDialog msg_dlg(q, _L("This file cannot be loaded in a simple mode. Do you want to switch to an advanced mode?")+"\n",
-                    _L("Detected advanced data"), wxICON_WARNING | wxYES | wxNO);
+                    _L("Detected advanced data"), wxICON_WARNING | wxYES | wxCANCEL);
                 if (msg_dlg.ShowModal() == wxID_YES) {
                     Slic3r::GUI::wxGetApp().save_mode(comAdvanced);
                     view3D->set_as_dirty();
@@ -6156,7 +6154,7 @@ bool Plater::load_files(const wxArrayString& filenames, bool delete_after_load/*
                 break;
             }
             case ProjectDropDialog::LoadType::LoadGeometry: {
-                Plater::TakeSnapshot snapshot(this, _L("Import Object"));
+//                Plater::TakeSnapshot snapshot(this, _L("Import Object"));
                 load_files({ *it }, true, false);
                 break;
             }