diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index d30d9ad88..8bd3a9180 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -2377,7 +2377,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
     }
 
     const auto loading = _L("Loading") + dots;
-    wxProgressDialog dlg(loading, "", 100, find_toplevel_parent(q), wxPD_AUTO_HIDE);
+    wxProgressDialog progress_dlg(loading, "", 100, find_toplevel_parent(q), wxPD_AUTO_HIDE);
     wxBusyCursor busy;
 
     auto *new_model = (!load_model || one_by_one) ? nullptr : new Slic3r::Model();
@@ -2386,7 +2386,8 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
     int answer_convert_from_meters          = wxOK_DEFAULT;
     int answer_convert_from_imperial_units  = wxOK_DEFAULT;
 
-    for (size_t i = 0; i < input_files.size(); ++i) {
+    size_t input_files_size = input_files.size();
+    for (size_t i = 0; i < input_files_size; ++i) {
 #ifdef _WIN32
         auto path = input_files[i];
         // On Windows, we swap slashes to back slashes, see GH #6803 as read_from_file() does not understand slashes on Windows thus it assignes full path to names of loaded objects.
@@ -2396,8 +2397,8 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
         const auto &path = input_files[i];
 #endif // _WIN32
         const auto filename = path.filename();
-        dlg.Update(static_cast<int>(100.0f * static_cast<float>(i) / static_cast<float>(input_files.size())), _L("Loading file") + ": " + from_path(filename));
-        dlg.Fit();
+        progress_dlg.Update(static_cast<int>(100.0f * static_cast<float>(i) / static_cast<float>(input_files.size())), _L("Loading file") + ": " + from_path(filename));
+        progress_dlg.Fit();
 
         const bool type_3mf = std::regex_match(path.string(), pattern_3mf);
         const bool type_zip_amf = !type_3mf && std::regex_match(path.string(), pattern_zip_amf);
@@ -2408,6 +2409,16 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
         bool is_project_file = type_prusa;
         try {
             if (type_3mf || type_zip_amf) {
+#ifdef __linux__
+                // On Linux Constructor of the ProgressDialog calls DisableOtherWindows() function which causes a disabling of all children of the find_toplevel_parent(q)
+                // And a destructor of the ProgressDialog calls ReenableOtherWindows() function which revert previously disabled children.
+                // But if printer technology will be changes during project loading, 
+                // then related SLA Print and Materials Settings or FFF Print and Filaments Settings will be unparent from the wxNoteBook
+                // and that is why they will never be enabled after destruction of the ProgressDialog.
+                // So, distroy progress_gialog if we are loading project file
+                if (input_files_size == 1)
+                    progress_dlg.Destroy();
+#endif
                 DynamicPrintConfig config;
                 PrinterTechnology loaded_printer_technology {ptFFF};
                 {