diff --git a/src/slic3r/GUI/GUI_Preview.cpp b/src/slic3r/GUI/GUI_Preview.cpp index f1607bafa..156444a51 100644 --- a/src/slic3r/GUI/GUI_Preview.cpp +++ b/src/slic3r/GUI/GUI_Preview.cpp @@ -774,7 +774,8 @@ void Preview::update_layers_slider_mode() return false; for (ModelVolume* volume : object->volumes) - if ((volume->config.has("extruder") && + if ((volume->config.has("extruder") && + volume->config.option("extruder")->getInt() != 0 && // extruder isn't default volume->config.option("extruder")->getInt() != extruder) || !volume->mmu_segmentation_facets.empty()) return false;