diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index ebb561a9e..5a3c1bb9f 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -442,7 +442,16 @@ sub new {
                 $self->{"object_info_$field"}->SetFont($Slic3r::GUI::small_font);
                 if ($field eq 'manifold') {
                     $self->{object_info_manifold_warning_icon} = Wx::StaticBitmap->new($scrolled_window_panel, -1, Wx::Bitmap->new(Slic3r::var("error.png"), wxBITMAP_TYPE_PNG));
-                    $self->{object_info_manifold_warning_icon}->Hide;
+                    #$self->{object_info_manifold_warning_icon}->Hide;
+                    $self->{"object_info_manifold_warning_icon_show"} = sub {
+                        if ($self->{object_info_manifold_warning_icon}->IsShown() != $_[0]) {
+                            Slic3r::GUI::set_show_manifold_warning_icon($_[0]);
+                            return if (wxTheApp->{app_config}->get("view_mode") eq "simple");
+                            $self->{object_info_manifold_warning_icon}->Show($_[0]); 
+                            $self->Layout
+                        }
+                    };
+                    $self->{"object_info_manifold_warning_icon_show"}->(0);
                     
                     my $h_sizer = Wx::BoxSizer->new(wxHORIZONTAL);
                     $h_sizer->Add($self->{object_info_manifold_warning_icon}, 0);
@@ -511,10 +520,7 @@ sub new {
 #            }
             if ($scrolled_window_sizer->IsShown(2) != $_[0]) {
                 Slic3r::GUI::set_show_print_info($_[0]);
-                my $mode = wxTheApp->{app_config}->get("view_mode");
-                printf $mode."\n";
-                return if ($mode eq "simple"); 
-                print "non-simple\n";
+                return if (wxTheApp->{app_config}->get("view_mode") eq "simple");
                 $scrolled_window_sizer->Show(2, $_[0]); 
                 $scrolled_window_panel->Layout
             }
@@ -542,7 +548,8 @@ sub new {
                                 $self->{btn_export_stl},
                                 $self->{btn_reslice},
                                 $self->{btn_print},
-                                $self->{btn_send_gcode} );
+                                $self->{btn_send_gcode},
+                                $self->{object_info_manifold_warning_icon} );
     }
 
     # Last correct selected item for each preset
@@ -881,6 +888,9 @@ sub remove {
     $self->select_object(undef);
     $self->update;
     $self->schedule_background_process;
+
+    # Hide the slicing results if the current slicing status is no more valid.
+    $self->{"print_info_box_show"}->(0);
 }
 
 sub reset {
@@ -900,6 +910,9 @@ sub reset {
     
     $self->select_object(undef);
     $self->update;
+
+    # Hide the slicing results if the current slicing status is no more valid.
+    $self->{"print_info_box_show"}->(0);
 }
 
 sub increase {
@@ -2017,7 +2030,8 @@ sub selection_changed {
                 $self->{object_info_facets}->SetLabel(sprintf(L('%d (%d shells)'), $model_object->facets_count, $stats->{number_of_parts}));
                 if (my $errors = sum(@$stats{qw(degenerate_facets edges_fixed facets_removed facets_added facets_reversed backwards_edges)})) {
                     $self->{object_info_manifold}->SetLabel(sprintf(L("Auto-repaired (%d errors)"), $errors));
-                    $self->{object_info_manifold_warning_icon}->Show;
+                    #$self->{object_info_manifold_warning_icon}->Show;
+                    $self->{"object_info_manifold_warning_icon_show"}->(1);
                     
                     # we don't show normals_fixed because we never provide normals
 	                # to admesh, so it generates normals for all facets
@@ -2027,14 +2041,16 @@ sub selection_changed {
                     $self->{object_info_manifold_warning_icon}->SetToolTipString($message);
                 } else {
                     $self->{object_info_manifold}->SetLabel(L("Yes"));
-                    $self->{object_info_manifold_warning_icon}->Hide;
+                    #$self->{object_info_manifold_warning_icon}->Hide;
+                    $self->{"object_info_manifold_warning_icon_show"}->(0);
                 }
             } else {
                 $self->{object_info_facets}->SetLabel($object->facets);
             }
         } else {
             $self->{"object_info_$_"}->SetLabel("") for qw(size volume facets materials manifold);
-            $self->{object_info_manifold_warning_icon}->Hide;
+            #$self->{object_info_manifold_warning_icon}->Hide;
+            $self->{"object_info_manifold_warning_icon_show"}->(0);
             $self->{object_info_manifold}->SetToolTipString("");
         }
         $self->Layout;
diff --git a/xs/src/slic3r/GUI/GUI.cpp b/xs/src/slic3r/GUI/GUI.cpp
index 09ede75be..abdeb6c72 100644
--- a/xs/src/slic3r/GUI/GUI.cpp
+++ b/xs/src/slic3r/GUI/GUI.cpp
@@ -210,7 +210,9 @@ wxButton	*g_btn_export_stl = nullptr;
 wxButton	*g_btn_reslice = nullptr;
 wxButton	*g_btn_print = nullptr;
 wxButton	*g_btn_send_gcode = nullptr;
+wxStaticBitmap	*g_manifold_warning_icon = nullptr;
 bool		g_show_print_info = false;
+bool		g_show_manifold_warning_icon = false;
 
 static void init_label_colours()
 {
@@ -274,7 +276,8 @@ void set_preset_updater(PresetUpdater *updater)
 void set_objects_from_perl(	wxWindow* parent, wxBoxSizer *frequently_changed_parameters_sizer,
 							wxBoxSizer *expert_mode_part_sizer, wxBoxSizer *scrolled_window_sizer,
 							wxButton *btn_export_stl, wxButton *btn_reslice, 
-							wxButton *btn_print, wxButton *btn_send_gcode)
+							wxButton *btn_print, wxButton *btn_send_gcode,
+							wxStaticBitmap *manifold_warning_icon)
 {
 	g_plater = parent;
 	g_frequently_changed_parameters_sizer = frequently_changed_parameters_sizer;
@@ -284,6 +287,7 @@ void set_objects_from_perl(	wxWindow* parent, wxBoxSizer *frequently_changed_par
 	g_btn_reslice = btn_reslice;
 	g_btn_print = btn_print;
 	g_btn_send_gcode = btn_send_gcode;
+	g_manifold_warning_icon = manifold_warning_icon;
 }
 
 void set_show_print_info(bool show)
@@ -291,6 +295,11 @@ void set_show_print_info(bool show)
 	g_show_print_info = show;
 }
 
+void set_show_manifold_warning_icon(bool show)
+{
+	g_show_manifold_warning_icon = show;
+}
+
 std::vector<Tab *>& get_tabs_list()
 {
 	return g_tabs_list;
@@ -1122,6 +1131,7 @@ void show_scrolled_window_sizer(bool show)
 	g_scrolled_window_sizer->Show(static_cast<size_t>(0), show);
 	g_scrolled_window_sizer->Show(1, show);
 	g_scrolled_window_sizer->Show(2, show && g_show_print_info);
+	g_manifold_warning_icon->Show(show && g_show_manifold_warning_icon);
 }
 
 void update_mode()
diff --git a/xs/src/slic3r/GUI/GUI.hpp b/xs/src/slic3r/GUI/GUI.hpp
index 1cca99319..4fd8b800a 100644
--- a/xs/src/slic3r/GUI/GUI.hpp
+++ b/xs/src/slic3r/GUI/GUI.hpp
@@ -20,6 +20,7 @@ class wxBoxSizer;
 class wxFlexGridSizer;
 class wxButton;
 class wxFileDialog;
+class wxStaticBitmap;
 
 namespace Slic3r { 
 
@@ -86,8 +87,10 @@ void set_objects_from_perl(	wxWindow* parent,
 							wxButton *btn_export_stl,
 							wxButton *btn_reslice,
 							wxButton *btn_print,
-							wxButton *btn_send_gcode);
+							wxButton *btn_send_gcode,
+							wxStaticBitmap *manifold_warning_icon);
 void set_show_print_info(bool show);
+void set_show_manifold_warning_icon(bool show);
 
 AppConfig*	get_app_config();
 wxApp*		get_app();
diff --git a/xs/xsp/GUI.xsp b/xs/xsp/GUI.xsp
index b402ab656..6dcb4a6ab 100644
--- a/xs/xsp/GUI.xsp
+++ b/xs/xsp/GUI.xsp
@@ -97,7 +97,8 @@ void set_objects_from_perl( SV *ui_parent,
                             SV *btn_export_stl,
                             SV *btn_reslice,
                             SV *btn_print,
-                            SV *btn_send_gcode)
+                            SV *btn_send_gcode,
+                            SV *manifold_warning_icon)
     %code%{ Slic3r::GUI::set_objects_from_perl(
                             (wxWindow *)wxPli_sv_2_object(aTHX_ ui_parent, "Wx::Window"),
                             (wxBoxSizer *)wxPli_sv_2_object(aTHX_ frequently_changed_parameters_sizer, "Wx::BoxSizer"),
@@ -106,11 +107,15 @@ void set_objects_from_perl( SV *ui_parent,
                             (wxButton *)wxPli_sv_2_object(aTHX_ btn_export_stl, "Wx::Button"),
                             (wxButton *)wxPli_sv_2_object(aTHX_ btn_reslice, "Wx::Button"),
                             (wxButton *)wxPli_sv_2_object(aTHX_ btn_print, "Wx::Button"),
-                            (wxButton *)wxPli_sv_2_object(aTHX_ btn_send_gcode, "Wx::Button")); %};
+                            (wxButton *)wxPli_sv_2_object(aTHX_ btn_send_gcode, "Wx::Button"),
+                            (wxStaticBitmap *)wxPli_sv_2_object(aTHX_ manifold_warning_icon, "Wx::StaticBitmap")); %};
 
 void set_show_print_info(bool show)
     %code%{ Slic3r::GUI::set_show_print_info(show); %};
 
+void set_show_manifold_warning_icon(bool show)
+    %code%{ Slic3r::GUI::set_show_manifold_warning_icon(show); %};
+
 std::string fold_utf8_to_ascii(const char *src)
     %code%{ RETVAL = Slic3r::fold_utf8_to_ascii(src); %};