Javascript drag & drop does not work when using a WebView control.

Description

WebView does not raise ondragover javascript event and prevents a drag&drop operation to be completed successfully.

NOTE: Using Edge Web Browser drag&drop operation is completed successfully.

Environment information:

Microsoft Visual Studio Professional 2022 Version 17.3.3 VisualStudio.17.Release/17.3.3+32825.248 Microsoft .NET Framework Version 4.8.04084

Installed Version: Professional

Visual C++ 2022 00476-80000-00000-AA425 Microsoft Visual C++ 2022

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.

Cookiecutter 17.0.22179.3 Provides tools for finding, instantiating and customizing templates in cookiecutter format.

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/

Python - Profiling support 17.0.22179.3 Profiling support for Python projects.

Python with Pylance 17.0.22179.3 Provides IntelliSense, projects, templates, debugging, interactive windows, and other support for Python developers.

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

Syntax Visualizer 1.0 An extension for visualizing Roslyn SyntaxTrees.

Test Adapter for Boost.Test 1.0 Enables Visual Studio's testing tools with unit tests written for Boost.Test. The use terms and Third Party Notices are available in the extension installation directory.

Test Adapter for Google Test 1.0 Enables Visual Studio's testing tools with unit tests written for Google Test. The use terms and Third Party Notices are available in the extension installation directory.

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 Color Theme Designer 1.0 Allows users to create and edit Visual Studio themes. Themes can customize colors used for menus, toolbars, tabs, titlebars, the text editor, and other environment colors.

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.

Steps to Reproduce

Create a .NET MAUI App project.
Replace MainPage.xaml code with:

<?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"
             x:Class="WebViewTest.MainPage">

    <WebView x:Name="myWebView" Source="https://www.w3schools.com/html/tryit.asp?filename=tryhtml5_draganddrop" />

</ContentPage>

Start the application.
Drag the image into the rectangle.

Expected result: when the drag&drop operation completes, the image is displayed inside the rectangle.

Actual result: drag&drop effects are not shown and the image cannot be dragged into the rectangle.

Link to public reproduction project repository

https://github.com/miguel-sousa-lopes/WebViewTest.App

Version with bug

6.0.486 (current)

Last version that worked well

Unknown/Other

Affected platforms

Windows, I was not able test on other platforms

Affected platform versions

Windows SDK 10

Did you find any workaround?

No response

Relevant log output

No response

dotnet / maui