Fix of #2821

src/slic3r/GUI/ConfigManipulation.cpp

@@ -141,6 +141,8 @@ void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, con
         apply(config, &new_conf);
     }
 
+    static bool support_material_overhangs_queried = false;
+
     if (config->opt_bool("support_material")) {
         // Ask only once.
         if (!support_material_overhangs_queried) {

src/slic3r/GUI/ConfigManipulation.hpp

@@ -18,7 +18,6 @@ namespace GUI {
 class ConfigManipulation
 {
     bool                is_msg_dlg_already_exist{ false };
-    bool                support_material_overhangs_queried{ false };
 
     // function to loading of changed configuration 
     std::function<void()>                                       load_config = nullptr;