[v2, darwin] Fix updating menus (#4057)

v2/internal/frontend/desktop/darwin/window.go

@@ -32,6 +32,8 @@ func init() {
 
 type Window struct {
 	context unsafe.Pointer
+
+	applicationMenu *menu.Menu
 }
 
 func bool2Cint(value bool) C.int {
@@ -292,12 +294,16 @@ func (w *Window) Size() (int, int) {
 }
 
 func (w *Window) SetApplicationMenu(inMenu *menu.Menu) {
-	mainMenu := NewNSMenu(w.context, "")
-	processMenu(mainMenu, inMenu)
-	C.SetAsApplicationMenu(w.context, mainMenu.nsmenu)
+	w.applicationMenu = inMenu
+	w.UpdateApplicationMenu()
 }
 
 func (w *Window) UpdateApplicationMenu() {
+	mainMenu := NewNSMenu(w.context, "")
+	if w.applicationMenu != nil {
+		processMenu(mainMenu, w.applicationMenu)
+	}
+	C.SetAsApplicationMenu(w.context, mainMenu.nsmenu)
 	C.UpdateApplicationMenu(w.context)
 }
 

website/src/pages/changelog.mdx

@@ -33,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed Dispatcher.ProcessMessage crash process instead of return error [PR](https://github.com/wailsapp/wails/pull/4016) [#4015](https://github.com/wailsapp/wails/issues/4015) by [@ronaldinho_x86](https://github.com/RonaldinhoL)
 - Fixed Windows SaveDialog crash by [@leaanthony](https://github.com/leaanthony) 
 - Fixed `buildvcs` errors by [@leaanthony](https://github.com/leaanthony) 
+- Fixed updating menus on MacOS by [@stffabi](https://github.com/stffabi)
 
 ### Changed
 - Removed documentation references for 'The default module name in go.mod is "changeme". You should change this to something more appropriate.' as it appears to be no longer relevant.