macOS menubar application: main menu not being displayed

Question

I have a statusbar application, which runs in the menu bar. Therefore I set Application is agent (UIElement) to true in the info.plst.

Answer 1

I tried with apple scripts, which appears working as expected.

Except, after closing by key strokes and then reopening a new window (short time interval), menu will stay selected.

if NSApp.activationPolicy() == .accessory {
    NSApp.setActivationPolicy(.regular)
} else {
    var errorDict: NSDictionary?
    NSAppleScript(source: """
        tell application "Dock" to activate current application
        """)?.executeAndReturnError(&errorDict)
    if errorDict != nil{
        print(errorDict!)
        // error executing apple script
        NSApp.activate(ignoringOtherApps: true)
    }
}

window?.makeKeyAndOrderFront(self)

GIF demo:

Video link