diff --git a/src/slic3r/GUI/Preferences.cpp b/src/slic3r/GUI/Preferences.cpp
index 2602eb420..d20049a37 100644
--- a/src/slic3r/GUI/Preferences.cpp
+++ b/src/slic3r/GUI/Preferences.cpp
@@ -851,7 +851,7 @@ PreferencesDialog::PreferencesDialog(wxWindow *parent, wxWindowID id, const wxSt
                 agent->track_event("preferences_changed", j.dump());
             }
         } catch(...) {}
-        Destroy();
+        event.Skip();
         });
 }
 
diff --git a/src/slic3r/GUI/WipeTowerDialog.cpp b/src/slic3r/GUI/WipeTowerDialog.cpp
index 5e24445b3..28e55272e 100644
--- a/src/slic3r/GUI/WipeTowerDialog.cpp
+++ b/src/slic3r/GUI/WipeTowerDialog.cpp
@@ -282,7 +282,7 @@ void WipingPanel::create_panels(wxWindow* parent, const int num) {
         for (unsigned int j = 0; j < num; ++j) {
             edit_boxes[j][i]->Reparent(panel);
             edit_boxes[j][i]->SetBackgroundColour(panel->GetBackgroundColour());
-            edit_boxes[j][i]->SetFont(::Label::Body_14);
+            edit_boxes[j][i]->SetFont(::Label::Body_13);
             sizer->AddSpacer(EDIT_BOXES_GAP);
             sizer->Add(edit_boxes[j][i], 0, wxALIGN_CENTER_VERTICAL, 0);
         }
@@ -368,10 +368,9 @@ WipingPanel::WipingPanel(wxWindow* parent, const std::vector<float>& matrix, con
 
     // BBS
     m_sizer_advanced->AddSpacer(FromDIP(10));
-    tip_message_panel = new wxPanel(m_page_advanced, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL);
+    auto tip_message_panel = new wxPanel(m_page_advanced, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL);
     tip_message_panel->SetBackgroundColour(wxColour(238, 238, 238));
     auto message_sizer = new wxBoxSizer(wxVERTICAL);
-    auto hyperlink_sizer = new wxBoxSizer(wxHORIZONTAL);
     tip_message_panel->SetSizer(message_sizer);
     {
         wxString message = _L("Studio would re-calculate your flushing volumes everytime the filaments color changed. You could disable the auto-calculate in Bambu Studio > Preferences");
diff --git a/src/slic3r/GUI/WipeTowerDialog.hpp b/src/slic3r/GUI/WipeTowerDialog.hpp
index 14eadc74b..31c5c6833 100644
--- a/src/slic3r/GUI/WipeTowerDialog.hpp
+++ b/src/slic3r/GUI/WipeTowerDialog.hpp
@@ -47,7 +47,6 @@ private:
 	wxPanel*	m_page_simple = nullptr;
 	wxPanel*	m_page_advanced = nullptr;
     wxPanel* header_line_panel = nullptr;
-    wxPanel* tip_message_panel = nullptr;
     wxBoxSizer*	m_sizer = nullptr;
     wxBoxSizer* m_sizer_simple = nullptr;
     wxBoxSizer* m_sizer_advanced = nullptr;