Sync-ing of menu has been done in CONDITIONAL_MENU for some time now.

common/tool/tool_manager.cpp

@@ -977,6 +977,6 @@ void TOOL_MANAGER::UpdateUI()
     if( frame )
     {
         frame->UpdateStatusBar();
-        frame->SyncMenusAndToolbars();
+        frame->SyncToolbars();
     }
 }

cvpcb/display_footprints_frame.cpp

@@ -445,7 +445,7 @@ void DISPLAY_FOOTPRINTS_FRAME::UpdateMsgPanel()
 }
 
 
-void DISPLAY_FOOTPRINTS_FRAME::SyncMenusAndToolbars()
+void DISPLAY_FOOTPRINTS_FRAME::SyncToolbars()
 {
     m_mainToolBar->Toggle( ACTIONS::zoomTool, GetToolId() == ID_ZOOM_SELECTION );
     m_mainToolBar->Refresh();

cvpcb/display_footprints_frame.h

@@ -127,7 +127,7 @@ public:
         // currently: do nothing in CvPcb.
     }
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
     DECLARE_EVENT_TABLE()
 };

eeschema/libedit/lib_edit_frame.h

@@ -452,7 +452,7 @@ public:
 
     void ShowChangedLanguage() override;
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
     void SetScreen( BASE_SCREEN* aScreen ) override;
 

eeschema/libedit/libedit.cpp

@@ -251,7 +251,7 @@ bool LIB_EDIT_FRAME::LoadOneLibraryPartAux( LIB_ALIAS* aEntry, const wxString& a
     updateTitle();
     RebuildSymbolUnitsList();
     SetShowDeMorgan( GetCurPart()->HasConversion() );
-    SyncMenusAndToolbars();
+    SyncToolbars();
 
     // Display the document information based on the entry selected just in
     // case the entry is an alias.

eeschema/libedit/toolbars_libedit.cpp

@@ -156,7 +156,7 @@ void LIB_EDIT_FRAME::ReCreateOptToolbar()
 }
 
 
-void LIB_EDIT_FRAME::SyncMenusAndToolbars()
+void LIB_EDIT_FRAME::SyncToolbars()
 {
     KIGFX::GAL_DISPLAY_OPTIONS& galOpts = GetGalDisplayOptions();
 

eeschema/sch_edit_frame.h

@@ -1097,7 +1097,7 @@ public:
 
     void ShowChangedLanguage() override;
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
     void SetScreen( BASE_SCREEN* aScreen ) override;
 

eeschema/toolbars_sch_editor.cpp

@@ -167,7 +167,7 @@ void SCH_EDIT_FRAME::ReCreateOptToolbar()
 }
 
 
-void SCH_EDIT_FRAME::SyncMenusAndToolbars()
+void SCH_EDIT_FRAME::SyncToolbars()
 {
     KIGFX::GAL_DISPLAY_OPTIONS& galOpts = GetGalDisplayOptions();
     SCH_SHEET_LIST              sheetList( g_RootSheet );

eeschema/toolbars_viewlib.cpp

@@ -146,7 +146,7 @@ void LIB_VIEW_FRAME::ReCreateMenuBar()
 }
 
 
-void LIB_VIEW_FRAME::SyncMenusAndToolbars()
+void LIB_VIEW_FRAME::SyncToolbars()
 {
     LIB_PART*  symbol = GetSelectedSymbol();
     LIB_ALIAS* alias = GetSelectedAlias();

eeschema/viewlib_frame.h

@@ -138,7 +138,7 @@ public:
 
     const BOX2I GetDocumentExtents() const override;
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
 private:
     // Sets up the tool framework

gerbview/gerbview_frame.h

@@ -592,7 +592,7 @@ public:
      */
     void CommonSettingsChanged() override;
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
     DECLARE_EVENT_TABLE()
 };

gerbview/toolbars_gerber.cpp

@@ -463,7 +463,7 @@ void GERBVIEW_FRAME::OnUpdateLayerSelectBox( wxUpdateUIEvent& aEvent )
 }
 
 
-void GERBVIEW_FRAME::SyncMenusAndToolbars()
+void GERBVIEW_FRAME::SyncToolbars()
 {
     KIGFX::GAL_DISPLAY_OPTIONS& galOpts = GetGalDisplayOptions();
 

include/eda_base_frame.h

@@ -414,7 +414,7 @@ public:
      * Update the toolbars (mostly settings/check buttons/checkboxes) with the current 
      * controller state.
      */
-    virtual void SyncMenusAndToolbars() { };
+    virtual void SyncToolbars() { };
 
     /**
      * Redraw the menus and what not in current language.

kicad/kicad_manager_frame.h

@@ -147,7 +147,7 @@ public:
      */
     void OnChangeWatchedPaths( wxCommandEvent& aEvent );
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
     void SetProjectFileName( const wxString& aFullProjectProFileName );
     const wxString GetProjectFileName();

kicad/menubar.cpp

@@ -223,7 +223,7 @@ void KICAD_MANAGER_FRAME::RecreateLauncher()
 }
 
 
-void KICAD_MANAGER_FRAME::SyncMenusAndToolbars()
+void KICAD_MANAGER_FRAME::SyncToolbars()
 {
     m_launcher->Toggle( KICAD_MANAGER_ACTIONS::editSchematic,  m_active_project );
     m_launcher->Toggle( KICAD_MANAGER_ACTIONS::editSymbols,    m_active_project );

pagelayout_editor/pl_editor_frame.h

@@ -162,7 +162,7 @@ public:
     void    ReCreateMenuBar() override;
     double  BestZoom() override;
 
-    void    SyncMenusAndToolbars() override;
+    void    SyncToolbars() override;
 
     const PL_EDITOR_LAYOUT& GetPageLayout() const { return m_pageLayout; }
     PL_EDITOR_LAYOUT& GetPageLayout() { return m_pageLayout; }

pagelayout_editor/toolbars_pl_editor.cpp

@@ -143,7 +143,7 @@ void PL_EDITOR_FRAME::ReCreateOptToolbar()
 }
 
 
-void PL_EDITOR_FRAME::SyncMenusAndToolbars()
+void PL_EDITOR_FRAME::SyncToolbars()
 {
     m_mainToolBar->Toggle( ACTIONS::save, GetScreen() && GetScreen()->IsModify() );
     m_mainToolBar->Toggle( ACTIONS::undo, GetScreen() && GetScreen()->GetUndoCommandCount() > 0 );

pcbnew/footprint_edit_frame.h

@@ -336,7 +336,7 @@ public:
 
     void KiwayMailIn( KIWAY_EXPRESS& mail ) override;
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
     DECLARE_EVENT_TABLE()
 

pcbnew/pcb_edit_frame.h

@@ -1020,7 +1020,7 @@ public:
      */
     void CommonSettingsChanged() override;
 
-    void SyncMenusAndToolbars() override;
+    void SyncToolbars() override;
 
     DECLARE_EVENT_TABLE()
 };

pcbnew/toolbars_footprint_editor.cpp

@@ -172,7 +172,7 @@ void FOOTPRINT_EDIT_FRAME::ReCreateOptToolbar()
 }
 
 
-void FOOTPRINT_EDIT_FRAME::SyncMenusAndToolbars()
+void FOOTPRINT_EDIT_FRAME::SyncToolbars()
 {
     PCB_DISPLAY_OPTIONS* opts = (PCB_DISPLAY_OPTIONS*) GetDisplayOptions();
 

pcbnew/toolbars_pcb_editor.cpp

@@ -694,7 +694,7 @@ void PCB_EDIT_FRAME::OnUpdateMuWaveToolbar( wxUpdateUIEvent& aEvent )
 }
 
 
-void PCB_EDIT_FRAME::SyncMenusAndToolbars()
+void PCB_EDIT_FRAME::SyncToolbars()
 {
     PCB_DISPLAY_OPTIONS*        opts = (PCB_DISPLAY_OPTIONS*) GetDisplayOptions();
     KIGFX::GAL_DISPLAY_OPTIONS& galOpts = GetGalDisplayOptions();