Visual Studio 2022中.NET MAUI项目部分XAML文件Intellisense失效问题

我有一个结构简单的.NET MAUI项目，包含3个XAML页面，项目编译运行无任何错误或警告。其中一个页面编辑时，输入<字符后，Intellisense弹出框缺失应有的XAML语句；另外两个页面的Intellisense则正常显示所有预期选项。

最初推测是上下文限制，但所有测试的插入点均位于ScrollView语句下方。后续排查发现关键触发条件：

• 当XML声明（<?xml version="1.0" encoding="utf-8" ?>）与<ContentPage...>之间无注释时，Intellisense功能正常；
• 若两者间存在约90行的大注释块，则Intellisense失效——悬停ContentPage节点无提示信息，插入节点时弹出框缺失所有选项。

目前仅能通过移除该注释块或将其移至ContentPage闭合标签之后来规避此问题。

开发环境信息 #

Microsoft Visual Studio Community 2022
Version 17.3.4
VisualStudio.17.Release/17.3.4+32901.215
Microsoft .NET Framework
Version 4.8.04084

Installed Version: Community

ADL Tools Service Provider   1.0
This package contains services used by Data Lake tools

ASA Service Provider   1.0

ASP.NET and Web Tools   17.3.376.3011
ASP.NET and Web Tools

Azure App Service Tools v3.0.0   17.3.376.3011
Azure App Service Tools v3.0.0

Azure Data Lake Tools for Visual Studio   2.6.5000.0
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools   17.3.376.3011
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio   2.6.5000.0
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools   4.3.0-3.22423.10+b35bb0baca1071d50cc4f8cf5a1a89e7cc112461
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus   1.2.6 (master@34d6af2)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

Microsoft Azure Hive Query Language Service   2.6.5000.0
Language service for Hive query

Microsoft Azure Stream Analytics Language Service   2.6.5000.0
Language service for Azure Stream Analytics

Microsoft Azure Tools for Visual Studio   2.9
Support for Azure Cloud Services projects

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Mono Debugging for Visual Studio   17.3.20 (3f4cb00)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager   6.3.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

Razor (ASP.NET Core)   17.0.0.2232702+e1d654e792aa2fe6646a6935bcca80ff0aff4387
Provides languages services for ASP.NET Core Razor.

SQL Server Data Tools   17.0.62207.04100
Microsoft SQL Server Data Tools

ToolWindowHostedEditor   1.0
Hosting json editor into a tool window

TypeScript Tools   17.0.10701.2001
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   4.3.0-3.22423.10+b35bb0baca1071d50cc4f8cf5a1a89e7cc112461
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools   17.1.0-beta.22363.4+1b94f89d4d1f41f20f9be73c76f4b229d4e49078
Microsoft Visual F# Tools

Visual Studio IntelliCode   2.2
AI-assisted development for Visual Studio.

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

VSPackage Extension   1.0
VSPackage Visual Studio Extension Detailed Info

Xamarin   17.3.0.296 (d17-3@a0ff24b)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   17.3.0.208 (remotes/origin/d17-3@e4f67afef)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   17.2.28 (9b3d244)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   13.0.0.0 (d17-3/030cd63)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: dffa5ab
    Java.Interop: xamarin/java.interop/d17-3@7716ae53
    SQLite: xamarin/sqlite/3.38.5@df4deab
    Xamarin.Android Tools: xamarin/xamarin-android-tools/main@14076a6


Xamarin.iOS and Xamarin.Mac SDK   15.12.0.2 (87f98a75e)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

疑问 #

请问为何部分XAML页面的Intellisense功能失效？这是Visual Studio的已知Bug吗？

内容的提问来源于stack exchange，提问作者bdcoder