Some fixes for the last commit

src/slic3r/GUI/Plater.cpp

@@ -1941,6 +1941,7 @@ void Plater::priv::split_volume()
 
 void Plater::priv::schedule_background_process()
 {
+    delayed_error_message.clear();
     // Trigger the timer event after 0.5s
     this->background_process_timer.Start(500, wxTIMER_ONE_SHOT);
     // Notify the Canvas3D that something has changed, so it may invalidate some of the layer editing stuff.

src/slic3r/GUI/Tab.cpp

@@ -830,6 +830,9 @@ void Tab::on_presets_changed()
         // refresh the print or filament/sla_material tab page.
         wxGetApp().get_tab(t)->load_current_preset();
     }
+    // clear m_dependent_tabs after first update from select_preset()
+    // to avoid needless preset loading from update() function
+    m_dependent_tabs.clear();
 
     // #ys_FIXME_to_delete
 // 	wxCommandEvent event(EVT_TAB_PRESETS_CHANGED);