diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 71a48297a48..a5ba4f079d7 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -524,6 +524,7 @@ struct Sidebar::priv
     wxStaticLine *              m_staticline1;
     StaticBox* m_panel_filament_title;
     wxStaticText* m_staticText_filament_settings;
+    wxStaticText* m_staticText_filament_count;
     ScalableButton *  m_bpButton_add_filament;
     ScalableButton *  m_bpButton_del_filament;
     ScalableButton *  m_bpButton_ams_filament;
@@ -2073,6 +2074,8 @@ Sidebar::Sidebar(Plater *parent)
             return;
         p->m_panel_filament_content->Show(!p->m_panel_filament_content->IsShown());
         m_scrolled_sizer->Layout();
+
+        CallAfter([this]{update_filaments_counter(true);}); // call after all UI processing done
     });
 
     wxBoxSizer* bSizer39;
@@ -2080,11 +2083,13 @@ Sidebar::Sidebar(Plater *parent)
     p->m_filament_icon = new ScalableButton(p->m_panel_filament_title, wxID_ANY, "filament");
     p->m_staticText_filament_settings = new Label(p->m_panel_filament_title, _L("Project Filaments"), LB_PROPAGATE_MOUSE_EVENT);
     bSizer39->Add(p->m_filament_icon, 0, wxALIGN_CENTER | wxLEFT, FromDIP(SidebarProps::TitlebarMargin()));
-    bSizer39->AddSpacer(FromDIP(SidebarProps::ElementSpacing()));
-    bSizer39->Add( p->m_staticText_filament_settings, 0, wxALIGN_CENTER );
-    bSizer39->Add(FromDIP(10), 0, 0, 0, 0);
+    bSizer39->Add(p->m_staticText_filament_settings, 0, wxALIGN_CENTER | wxLEFT | wxRIGHT, FromDIP(SidebarProps::ElementSpacing()));
     bSizer39->SetMinSize(-1, FromDIP(30));
 
+    p->m_staticText_filament_count = new Label(p->m_panel_filament_title, "(0)", LB_PROPAGATE_MOUSE_EVENT);
+    bSizer39->Add(p->m_staticText_filament_count, 0, wxALIGN_CENTER );
+    bSizer39->Add(FromDIP(10), 0, 0, 0, 0);
+
     p->m_panel_filament_title->SetSizer( bSizer39 );
     p->m_panel_filament_title->Layout();
     auto spliter_1 = new ::StaticLine(p->scrolled);
@@ -2119,6 +2124,7 @@ Sidebar::Sidebar(Plater *parent)
     add_btn->SetToolTip(_L("Add one filament"));
     add_btn->Bind(wxEVT_BUTTON, [this, scrolled_sizer](wxCommandEvent& e){
         add_filament();
+        update_filaments_counter();
     });
     p->m_bpButton_add_filament = add_btn;
 
@@ -2128,6 +2134,7 @@ Sidebar::Sidebar(Plater *parent)
     del_btn->SetToolTip(_L("Remove last filament"));
     del_btn->Bind(wxEVT_BUTTON, [this, scrolled_sizer](wxCommandEvent &e) {
         delete_filament();
+        update_filaments_counter();
     });
     p->m_bpButton_del_filament = del_btn;
 
@@ -2854,6 +2861,26 @@ void Sidebar::update_filaments_area_height()
     if (min_size.y > p->m_panel_filament_content->GetMaxHeight())
         min_size.y = p->m_panel_filament_content->GetMaxHeight();
     p->m_panel_filament_content->SetMinSize({-1, min_size.y});
+
+    update_filaments_counter();
+}
+
+void Sidebar::update_filaments_counter(bool force_layout)
+// ORCA
+{
+    int  current_count       = p->combos_filament.size();
+    int  preferred_count     = std::stoi(wxGetApp().app_config->get("filaments_area_preferred_count"));
+    bool isShown             = p->m_panel_filament_content->IsShown();
+    auto counter             = p->m_staticText_filament_count;
+
+    counter->SetLabel("(" + std::to_string(current_count) + ")"); // update counter on every change
+    if(current_count > preferred_count || !isShown)
+        counter->Show();
+    else if (isShown) // hide when list is visible and short enough
+        counter->Hide();
+
+    if(force_layout)
+        m_scrolled_sizer->Layout();
 }
 
 void Sidebar::msw_rescale()
@@ -3161,6 +3188,13 @@ void Sidebar::add_filament() {
     if (p->combos_filament.size() >= MAXIMUM_EXTRUDER_NUMBER) return;
     wxColour    new_col        = Plater::get_next_color_for_filament();
     add_custom_filament(new_col);
+
+    auto filament_list = p->m_panel_filament_content;
+    if(!filament_list->IsShown()){
+        filament_list->Show(); // ORCA show list if its folded
+        m_scrolled_sizer->Layout();
+    }
+    filament_list->Scroll(-1, INT_MAX); // ORCA scroll to end of list on changes to inform user about filament count
 }
 
 void Sidebar::delete_filament(size_t filament_id, int replace_filament_id) {
@@ -3193,6 +3227,14 @@ void Sidebar::delete_filament(size_t filament_id, int replace_filament_id) {
     wxGetApp().preset_bundle->export_selections(*wxGetApp().app_config);
 
     wxGetApp().plater()->update();
+
+    auto filament_list = p->m_panel_filament_content;
+    if(!filament_list->IsShown()){
+        filament_list->Show(); // ORCA show list if its folded
+        m_scrolled_sizer->Layout();
+    }
+
+    filament_list->Scroll(-1, INT_MAX); // ORCA scroll to end of list on changes to inform user about filament count
 }
 
 void Sidebar::change_filament(size_t from_id, size_t to_id)
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index f2089c1c4fa..18254383cdb 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -173,6 +173,7 @@ public:
     bool reset_bed_type_combox_choices(bool is_sidebar_init = false);
     void change_top_border_for_mode_sizer(bool increase_border);
     void update_filaments_area_height();
+    void update_filaments_counter(bool force_layout = false);
     void msw_rescale();
     void sys_color_changed();
     void search();