在我的MAUI应用程序中，我在两个页面之间导航，主页面和添加页面。
我正在按钮调用的ViewModel上的命令中使用await Shell.Current.GoToAsync()。但是，当我单击按钮时，它保持灰色。它导航到正确的页面，但当我返回到页面时，它仍然是灰色的。如果我右键单击按钮，它会修复此问题，不再是灰色的。如果我取消await或使其不同步，也会修复此问题。
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<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:viewmodel="clr-namespace:ButtonTest"
             x:DataType="viewmodel:MainPageViewModel"
             x:Class="ButtonTest.MainPage">

    <ScrollView>
        <VerticalStackLayout
            Spacing="25"
            Padding="30,0"
            VerticalOptions="Center">

            <Image
                Source="dotnet_bot.png"
                SemanticProperties.Description="Cute dot net bot waving hi to you!"
                HeightRequest="200"
                HorizontalOptions="Center" />

            <Label
                Text="Hello, World!"
                SemanticProperties.HeadingLevel="Level1"
                FontSize="32"
                HorizontalOptions="Center" />

            <Label
                Text="Welcome to .NET Multi-platform App UI"
                SemanticProperties.HeadingLevel="Level2"
                SemanticProperties.Description="Welcome to dot net Multi platform App U I"
                FontSize="18"
                HorizontalOptions="Center" />

            <Button
                x:Name="CounterBtn"
                Text="AddPage"
                Command="{Binding GoAddPageCommand}"
                HorizontalOptions="Center" />

        </VerticalStackLayout>
    </ScrollView>

</ContentPage>

namespace ButtonTest;

public partial class MainPage : ContentPage
{
    int count = 0;

    public MainPage(MainPageViewModel vm)
    {
        InitializeComponent();
        BindingContext= vm;
    }

    private void OnCounterClicked(object sender, EventArgs e)
    {
        count++;

        if (count == 1)
            CounterBtn.Text = $"Clicked {count} time";
        else
            CounterBtn.Text = $"Clicked {count} times";

        SemanticScreenReader.Announce(CounterBtn.Text);
    }
}

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ButtonTest
{
    public partial class MainPageViewModel : ObservableObject
    {
        [RelayCommand]
        public async Task GoAddPage()
        {
            await Shell.Current.GoToAsync("//AddPage");
        }
    } 
}

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:viewmodel="clr-namespace:ButtonTest"
             x:DataType="viewmodel:AddPageViewModel"
             x:Class="ButtonTest.AddPage"
             Title="AddPage">
    <VerticalStackLayout>
        <Button
                x:Name="CounterBtn"
                Text="MainPage"
                Command="{Binding GoMainPageCommand}"
                HorizontalOptions="Center" />
    </VerticalStackLayout>
</ContentPage>

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ButtonTest
{
    public partial class AddPageViewModel : ObservableObject
    {
        [RelayCommand]
        public async Task GoMainPage()
        {
            await Shell.Current.GoToAsync("//MainPage");
        }
    }
}

Appshell.xaml

<Shell
    x:Class="ButtonTest.AppShell"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:ButtonTest"
    Shell.FlyoutBehavior="Disabled">

    <ShellContent
        Title="MainPage"
        ContentTemplate="{DataTemplate local:MainPage}"
        Route="MainPage" />

    

</Shell>

AppShell.xaml.cs

public partial class AppShell : Shell
{
    public AppShell()
    {
        InitializeComponent();
        Routing.RegisterRoute($"{nameof(MainPage)}", typeof(MainPage));
        Routing.RegisterRoute($"{nameof(AddPage)}", typeof(AddPage));

    }
}

我认为按下按钮后它会返回正常颜色。我尝试删除async或不返回Task，效果如预期。如何处理异步命令和按钮？