Store configuration on gizmo close not destructor

src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp

@@ -601,7 +601,9 @@ void GLGizmoEmboss::on_set_state()
             return;
         }
         m_volume = nullptr;
-
+        // Store order and last activ index into app.ini
+        // TODO: what to do when can't store into file?
+        m_style_manager.store_styles_to_app_config(false);
         remove_notification_not_valid_font();
     } else if (GLGizmoBase::m_state == GLGizmoBase::On) {
         if (!m_gui_cfg.has_value()) initialize();

src/slic3r/Utils/EmbossStyleManager.cpp

@@ -25,10 +25,6 @@ EmbossStyleManager::EmbossStyleManager(const ImWchar *language_glyph_range)
 EmbossStyleManager::~EmbossStyleManager() { 
     clear_imgui_font();
     free_style_images();
-    store_styles_to_app_config(false, false);
-    if (m_app_config != nullptr &&
-        m_last_style_index != std::numeric_limits<size_t>::max())
-        EmbossStylesSerializable::store_style_index(*m_app_config, m_last_style_index);
 }
 
 void EmbossStyleManager::init(AppConfig *app_config, const EmbossStyles &default_styles)
@@ -90,8 +86,14 @@ bool EmbossStyleManager::store_styles_to_app_config(bool use_modification,
             m_style_cache.stored_wx_font = m_style_cache.wx_font;
         }
     }
+
     if (store_activ_index)
-        EmbossStylesSerializable::store_style_index(*m_app_config, m_style_cache.style_index);
+    {
+        size_t style_index = exist_stored_style() ?
+                                 m_style_cache.style_index :
+                                 m_last_style_index;
+        EmbossStylesSerializable::store_style_index(*m_app_config, style_index);
+    }
 
     EmbossStyles styles;
     styles.reserve(m_style_items.size());

src/slic3r/Utils/EmbossStyleManager.hpp

@@ -27,7 +27,6 @@ public:
         
     /// <summary>
     /// Release imgui font and style images from GPU
-    /// Store order and last activ font index
     /// </summary>
     ~EmbossStyleManager();