2.2.0 pre4 (#84)

* Fix crash

* Update: Flutter 1223

* fix: networktestdialog crash

* Update Flutter 1223

* bump profile version to 02.02.42.02

* bump min_firm_ver to 1.0.0

src/slic3r/GUI/MainFrame.cpp

@@ -889,7 +889,7 @@ void MainFrame::update_layout()
 }
 
 // Called when closing the application and when switching the application language.
-void MainFrame::shutdown()
+void MainFrame::shutdown(bool isRecreate)
 {
     BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << "MainFrame::shutdown enter";
     // BBS: backup
@@ -956,7 +956,7 @@ void MainFrame::shutdown()
     // to avoid any manipulations with them from App->wxEVT_IDLE after of the mainframe closing
     wxGetApp().tabs_list.clear();
     wxGetApp().model_tabs_list.clear();
-    wxGetApp().shutdown();
+    wxGetApp().shutdown(isRecreate);
     // BBS: why clear ?
     //wxGetApp().plater_ = nullptr;
 
@@ -2308,9 +2308,25 @@ static wxMenu* generate_help_menu()
     });
 
     append_menu_item(helpMenu, wxID_ANY, _L("Open Network Test"), _L("Open Network Test"), [](wxCommandEvent&) {
-            NetworkTestDialog dlg(wxGetApp().mainframe);
-            dlg.ShowModal();
-        });
+        // Use shared_ptr to manage dialog lifetime
+        auto dlg = std::make_shared<NetworkTestDialog>(wxGetApp().mainframe);
+        dlg->ShowModal();
+
+        // Keep dialog alive for 2 seconds after closing to allow background threads to finish
+        // Use a timer to delay the destruction
+        class DelayedReleaseTimer : public wxTimer {
+            std::shared_ptr<NetworkTestDialog> m_dialog;
+        public:
+            DelayedReleaseTimer(std::shared_ptr<NetworkTestDialog> dlg) : m_dialog(std::move(dlg)) {
+                StartOnce(5000); // 5 seconds delay
+            }
+            void Notify() override {
+                m_dialog.reset(); // Release the dialog
+                delete this; // Delete the timer itself
+            }
+        };
+        new DelayedReleaseTimer(dlg); // Timer will delete itself
+    });
 
     // About
 #ifndef __APPLE__