Fix 2D instance drop position

(cherry picked from commit 3a9fb3aff0d8f882c06826f5a7ca6d06a0a4fd34)

editor/plugins/canvas_item_editor_plugin.cpp

@@ -6475,16 +6475,18 @@ bool CanvasItemEditorViewport::_create_instance(Node *parent, String &path, cons
 	editor_data->get_undo_redo().add_do_method(sed, "live_debug_instance_node", editor->get_edited_scene()->get_path_to(parent), path, new_name);
 	editor_data->get_undo_redo().add_undo_method(sed, "live_debug_remove_node", NodePath(String(editor->get_edited_scene()->get_path_to(parent)) + "/" + new_name));
 
-	CanvasItem *parent_ci = Object::cast_to<CanvasItem>(parent);
-	if (parent_ci) {
+	CanvasItem *instance_ci = Object::cast_to<CanvasItem>(instanced_scene);
+	if (instance_ci) {
 		Vector2 target_pos = canvas_item_editor->get_canvas_transform().affine_inverse().xform(p_point);
 		target_pos = canvas_item_editor->snap_point(target_pos);
-		target_pos = parent_ci->get_global_transform_with_canvas().affine_inverse().xform(target_pos);
-		// Preserve instance position of the original scene.
-		CanvasItem *instance_ci = Object::cast_to<CanvasItem>(instanced_scene);
-		if (instance_ci) {
-			target_pos += instance_ci->_edit_get_position();
+
+		CanvasItem *parent_ci = Object::cast_to<CanvasItem>(parent);
+		if (parent_ci) {
+			target_pos = parent_ci->get_global_transform_with_canvas().affine_inverse().xform(target_pos);
 		}
+		// Preserve instance position of the original scene.
+		target_pos += instance_ci->_edit_get_position();
+
 		editor_data->get_undo_redo().add_do_method(instanced_scene, "set_position", target_pos);
 	}