Fix typed collections using same reference across scene instances

Author: mihe

scene/resources/packed_scene.cpp

@@ -372,33 +372,36 @@ Node *SceneState::instantiate(GenEditState p_edit_state) const {
 
 						if (value.get_type() == Variant::ARRAY) {
 							Array set_array = value;
-							value = setup_resources_in_array(set_array, n, resources_local_to_sub_scene, node, snames[nprops[j].name], resources_local_to_scene, i, ret_nodes, p_edit_state);
-
 							bool is_get_valid = false;
 							Variant get_value = node->get(snames[nprops[j].name], &is_get_valid);
 
 							if (is_get_valid && get_value.get_type() == Variant::ARRAY) {
 								Array get_array = get_value;
-								if (!set_array.is_same_typed(get_array)) {
-									value = Array(set_array, get_array.get_typed_builtin(), get_array.get_typed_class_name(), get_array.get_typed_script());
+								if (set_array.is_same_typed(get_array)) {
+									set_array = set_array.duplicate();
+								} else {
+									set_array = Array(set_array, get_array.get_typed_builtin(), get_array.get_typed_class_name(), get_array.get_typed_script());
 								}
 							}
+
+							value = setup_resources_in_array(set_array, n, resources_local_to_sub_scene, node, snames[nprops[j].name], resources_local_to_scene, i, ret_nodes, p_edit_state);
 						}
 
 						if (value.get_type() == Variant::DICTIONARY) {
 							Dictionary set_dict = value;
-							value = setup_resources_in_dictionary(set_dict, n, resources_local_to_sub_scene, node, snames[nprops[j].name], resources_local_to_scene, i, ret_nodes, p_edit_state);
-
 							bool is_get_valid = false;
 							Variant get_value = node->get(snames[nprops[j].name], &is_get_valid);
 
 							if (is_get_valid && get_value.get_type() == Variant::DICTIONARY) {
 								Dictionary get_dict = get_value;
-								if (!set_dict.is_same_typed(get_dict)) {
-									value = Dictionary(set_dict, get_dict.get_typed_key_builtin(), get_dict.get_typed_key_class_name(), get_dict.get_typed_key_script(),
-											get_dict.get_typed_value_builtin(), get_dict.get_typed_value_class_name(), get_dict.get_typed_value_script());
+								if (set_dict.is_same_typed(get_dict)) {
+									set_dict = set_dict.duplicate();
+								} else {
+									set_dict = Dictionary(set_dict, get_dict.get_typed_key_builtin(), get_dict.get_typed_key_class_name(), get_dict.get_typed_key_script(), get_dict.get_typed_value_builtin(), get_dict.get_typed_value_class_name(), get_dict.get_typed_value_script());
 								}
 							}
+
+							value = setup_resources_in_dictionary(set_dict, n, resources_local_to_sub_scene, node, snames[nprops[j].name], resources_local_to_scene, i, ret_nodes, p_edit_state);
 						}
 
 						bool set_valid = true;