diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index cbeb377017..b3ad1c9261 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -1112,10 +1112,14 @@ void Sidebar::update_presets(Preset::Type preset_type)
     case Preset::TYPE_PRINTER:
     {
         update_all_preset_comboboxes();
+#if 1 // #ysFIXME_delete_after_test_of  >> it looks like CallAfter() is no need [issue with disapearing of comboboxes are not reproducible]
+        p->show_preset_comboboxes();
+#else
         // CallAfter is really needed here to correct layout of the preset comboboxes,
         // when printer technology is changed during a project loading AND/OR switching the application mode.
         // Otherwise, some of comboboxes are invisible 
         CallAfter([this]() { p->show_preset_comboboxes(); });
+#endif
         break;
     }