[Bug]: CS0433 for DispatcherScheduler with 18.4.22 on net7.0-windows10.0.19041

[Yarith]

Describe the bug 🐞

In projects which target .net7.0-windows10.0.19041 you can not simply access DispatcherScheduler with the current version 18.4.22. It does not compile because following error gets produces:

Schweregrad	Code	Beschreibung	Projekt	Datei	Zeile	Unterdrückungszustand
Fehler	CS0433	Der Typ "DispatcherScheduler" ist in "ReactiveUI.Wpf, Version=18.4.0.0, Culture=neutral, PublicKeyToken=null" und "System.Reactive, Version=5.0.0.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263" vorhanden.	ReactiveUITest	MainWindow.xaml.cs	28	Aktiv

The last version which had worked was 18.4.1. The new version is targeting .NET 7.0 and i wanted to test if #3432 does not happen anymore.

With net7.0-windows10.0.17763 it can compile the test project, described in the reproduction steps. For my real project i do need a higher version.

Additionally with the update to Visual Studio 17.5.1, it has caused for me, that i can not even step while debugging, because it wants to apply code changes. Previously at least i could step but not change anything. I was hoping i could solve it with the update to the newest version, but sadly the project does not compile with the new version for me.

Step to reproduce

1. Create a new .net 7.0 wpf project
2. Change the content of the project file to following text:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net7.0-windows10.0.19041</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWPF>true</UseWPF>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="ReactiveUI" Version="18.4.22" />
    <PackageReference Include="ReactiveUI.Fody" Version="18.4.22" />
    <PackageReference Include="ReactiveUI.WPF" Version="18.4.22" />
    <PackageReference Include="System.Reactive" Version="5.0.0" />
    <PackageReference Include="System.Reactive.PlatformServices" Version="5.0.0" />
  </ItemGroup>

</Project>

3. Go to the MainWindow.xaml.cs file and add following using using System.Reactive.Concurrency;.
4. Try access DispatcherScheduler.Current in the constructor:

/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
   public MainWindow()
   {
       InitializeComponent();

       var _ = DispatcherScheduler.Current;
    }
}

6. Look in the error list and you can see the error CS0433.

Reproduction repository

https://github.com/reactiveui/ReactiveUI

Expected behavior

DispatcherScheduler should still not have any conflict with the System.Reactive package.

Screenshots 🖼️

IDE

Visual Studio 2022

Operating system

Windows

Version

Windows 10 22H2 (Build 19045.2604), Visual Studio 17.5.1

Device

No response

ReactiveUI Version

18.4.22

Additional information ℹ️

No response

[ChrisPulman]

Hi @Yarith thanks for raising this as a potential issue, I will take a look into this today and give you feedback on my findings.

[ChrisPulman]

Please update to version 18.4.25 to resolve this, thank you for raising this.
Please let us know if you find anything else.

[github-actions]

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