[Bug]: RxUI 18.4.26: ObserveOnDispatcher missing

[jasonwurzel]

Describe the bug 🐞

just updated my project from RxUI 18.4.25 to 18.4.26 and got compilation errors, because ObserveOnDispatcher is no longer present.
Project is WPF + net7.0-windows10.0.17763.0

Step to reproduce

1. git clone https://github.com/jasonwurzel/RxUI_ObserveOnDispatcherMissing
2. main branch compiles
3. switch to updated_rxui branch
4. compile errors

Reproduction repository

https://github.com/jasonwurzel/RxUI_ObserveOnDispatcherMissing

Expected behavior

There should be no breaking change updating from 18.4.25 to 18.4.26

Screenshots 🖼️

No response

IDE

No response

Operating system

Windows 11

Version

No response

Device

No response

ReactiveUI Version

18.4.26

Additional information ℹ️

Looking at the only change that happened in #3497 , it is totally logical because of this section in ReactiveUI.Wpf.csproj:

  <ItemGroup Condition=" $(TargetFramework) == 'net462' or $(TargetFramework.StartsWith('net6.0-windows')) or $(TargetFramework.StartsWith('net7.0-windows')) ">
    <Compile Include="..\ReactiveUI.Uwp\Rx\Internal\Constants.cs" LinkBase="Rx" />
    <Compile Include="..\ReactiveUI.Uwp\Rx\Linq\**\*.cs" LinkBase="Rx" Exclude="..\ReactiveUI.Uwp\Rx\Linq\*Observable.cs" />
  </ItemGroup>

That means the static class named DispatcherObservable containing SubscribeOnDispatcher is no longer included.
Or am I missing something here?

[jasonwurzel]

( upgrading the TFM to net7.0-windows10.0.19041.0 fixes it, guess that is the most efficient way to get rid of the error )

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