Fix of #5720 - SL1 Printer Settings->Notes is not updated when switching tab

src/slic3r/GUI/Tab.cpp

@@ -309,6 +309,13 @@ void Tab::create_preset_tab()
     // This helps to process all the cursor key events on Windows in the tree control,
     // so that the cursor jumps to the last item.
     m_treectrl->Bind(wxEVT_TREE_SEL_CHANGED, [this](wxTreeEvent&) {
+#ifdef __linux__
+        // Events queue is opposite On Linux. wxEVT_SET_FOCUS invokes after wxEVT_TREE_SEL_CHANGED,
+        // and a result wxEVT_KILL_FOCUS doesn't invoke for the TextCtrls.
+        // see https://github.com/prusa3d/PrusaSlicer/issues/5720
+        // So, call SetFocus explicitly for this control before changing of the selection
+        m_treectrl->SetFocus();
+#endif
             if (!m_disable_tree_sel_changed_event && !m_pages.empty()) {
                 if (m_page_switch_running)
                     m_page_switch_planned = true;