[Bug]: Rider & VScode console breaks in tunit 1.13.x

[faustin0]

Description

Running a test that contains Console.WriteLine followed by Task.Delay causes the Rider test runner to crash with a JsonRpcInternalErrorException.

Expected Behavior

The test should execute successfully, log output to the console, wait for the delay, and complete with the assertion passing.

Actual Behavior

• The test process starts and outputs "Logging something"
• The process is immediately aborted (exit code -1)
• Rider logs a JsonRpcInternalErrorException
• Error message: Process C:\Program Files\dotnet\dotnet.exe:15024 is being aborted

|I| Run: 6fd3c92f-c97b-432c-964b-313a37329fa4 - Faulted
|W| Element <RiderConcoleTest.1.1.Foo.1.1.0> was left Running after its run completion.
|I| RunTestsStage completed
|I| FinishLaunchStage started
|I| FinishLaunchStage completed

Steps to Reproduce

public class RiderConsoleTest( )
{
    [Test]
    public async Task Foo()
    {
        //this WriteLine + delay breaks the rider console
        Console.WriteLine("Logging something"); 
        await Task.Delay(1000); 
       
        await Assert.That(true).IsTrue();
    }
    
}

TUnit Version

1.13.x

.NET Version

.NET8

Operating System

Windows

IDE / Test Runner

JetBrains Rider

Error Output / Stack Trace

--- EXCEPTION #1/2 [JsonRpcInternalErrorException]
StackTraceString = “
  at JetBrains.JsonRpc.JsonRpc.InvokeAsync[TResult](String method, IReadOnlyList`1 args, CancellationToken ct) in InvokeAsync.il:line IL_0268 mvid 4CB9
     at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.ThrowIf[TResult,TException](Task`1 task, Task signallingTask, Func`1 exceptionFactory) in ThrowIf.il:line IL_0000 mvid 0BCB
     at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.CancelIf[TResult](Task`1 task, CancellationToken ct) in CancelIf.il:line IL_0000 mvid 0BCB
     at JetBrains.ReSharper.UnitTesting.VsTest.Provider.TestingPlatform.TestingPlatformRunStrategy.Run(IUnitTestRun run) in Run.il:line IL_01A6 mvid D9F7
     at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.StartCore(CancellationToken onCancel, CancellationToken onAbort) in StartCore.il:line IL_0000 mvid 0BCB or StartCore.il:line IL_01E7 mvid 0BCB
     at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.<>c.<StartCore>b__37_0(ExceptionDispatchInfo e) in UnitTestRun.il:line IL_0000 mvid 0BCB
     at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.StartCore(CancellationToken onCancel, CancellationToken onAbort) in StartCore.il:line IL_0000 mvid 0BCB or StartCore.il:line IL_01E7 mvid 0BCB
     at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.Start(CancellationToken onCancel, CancellationToken onAbort) in Start.il:line IL_0182 mvid 0BCB
”
ExceptionPath = Root.InnerException
ClassName = JetBrains.JsonRpc.JsonRpcInternalErrorException
HResult = COR_E_EXCEPTION=80131500
Source = System.Private.CoreLib

--- Outer ---

--- EXCEPTION #2/2 [LoggerException]
Message = “Exception of type 'JetBrains.JsonRpc.JsonRpcInternalErrorException' was thrown.”
InnerException = “Exception #1 at Root.InnerException”
StackTraceString = “
  at JetBrains.Util.ILoggerEx.Error(ILogger logger, Exception exception, ExceptionOrigin origin, String comment) in Error.il:line IL_0000 mvid 4A80
     at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.Start(CancellationToken onCancel, CancellationToken onAbort) in Start.il:line IL_0182 mvid 0BCB
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.ExecutionContextCallback(Object s) in ExecutionContextCallback.il:line IL_0000 mvid 5342
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext() in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
     at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception, Task`1& taskField) in SetException.il:line IL_0025 mvid 5342
     at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.StartCore(CancellationToken onCancel, CancellationToken onAbort) in StartCore.il:line IL_0000 mvid 0BCB
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.ExecutionContextCallback(Object s) in ExecutionContextCallback.il:line IL_0000 mvid 5342
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext() in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
     at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception, Task`1& taskField) in SetException.il:line IL_0025 mvid 5342
     at JetBrains.ReSharper.UnitTesting.VsTest.Provider.TestingPlatform.TestingPlatformRunStrategy.Run(IUnitTestRun run) in Run.il:line IL_01A6 mvid D9F7
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
     at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception, Task`1& taskField) in SetException.il:line IL_0025 mvid 5342
     at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.CancelIf[TResult](Task`1 task, CancellationToken ct) in CancelIf.il:line IL_0000 mvid 0BCB
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in TrySetResult.il:line IL_004B mvid 5342
     at System.Threading.Tasks.Task.TwoTaskWhenAnyPromise`1.Invoke(Task completingTask) in Invoke.il:line IL_0088 mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
     at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception, Task`1& taskField) in SetException.il:line IL_0025 mvid 5342
     at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.ThrowIf[TResult,TException](Task`1 task, Task signallingTask, Func`1 exceptionFactory) in ThrowIf.il:line IL_0000 mvid 0BCB
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in TrySetResult.il:line IL_004B mvid 5342
     at System.Threading.Tasks.Task.TwoTaskWhenAnyPromise`1.Invoke(Task completingTask) in Invoke.il:line IL_0088 mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
     at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception, Task`1& taskField) in SetException.il:line IL_0025 mvid 5342
     at JetBrains.JsonRpc.JsonRpc.InvokeAsync[TResult](String method, IReadOnlyList`1 args, CancellationToken ct) in InvokeAsync.il:line IL_0268 mvid 4CB9
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
     at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
     at JetBrains.JsonRpc.JsonRpc.HandleResponseAsync(JsonRpcResponse response) in HandleResponseAsync.il:line IL_0000 mvid 4CB9
     at JetBrains.JsonRpc.JsonRpc.HandleMessage(JsonRpcMessage message) in HandleMessage.il:line IL_003B mvid 4CB9
     at JetBrains.JsonRpc.JsonRpc.HandleMessagesAsync() in HandleMessagesAsync.il:line IL_00D1 mvid 4CB9
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at JetBrains.JsonRpc.HeaderDelimitedMessageTransport.ReadAsync(CancellationToken ct) in ReadAsync.il:line IL_0191 mvid 4CB9
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at JetBrains.JsonRpc.HeaderDelimitedMessageTransport.ReadContentSizeAsync(CancellationToken ct) in ReadContentSizeAsync.il:line IL_0100 mvid 4CB9
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in TrySetResult.il:line IL_004B mvid 5342
     at System.IO.StreamReader.ReadLineAsyncInternal(CancellationToken cancellationToken) in ReadLineAsyncInternal.il:line IL_03E6 mvid 5342
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
     at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
     at System.IO.StreamReader.ReadBufferAsync(CancellationToken cancellationToken) in ReadBufferAsync.il:line IL_0297 mvid 5342
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
     at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
     at System.Net.Sockets.SocketAsyncEventArgs.<>c.<.cctor>b__174_0(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped) in SocketAsyncEventArgs.il:line IL_0046 mvid 9433
     at System.Threading.PortableThreadPool.IOCompletionPoller.Callback.Invoke(Event e) in Invoke.il:line IL_003A mvid 5342
     at System.Threading.ThreadPoolTypedWorkItemQueue`2.System.Threading.IThreadPoolWorkItem.Execute()
     at System.Threading.ThreadPoolWorkQueue.Dispatch() in Dispatch.il:line IL_019C mvid 5342
     at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in WorkerThreadStart.il:line IL_00A0 mvid 5342
”
ExceptionPath = Root
ClassName = JetBrains.Util.LoggerException
HResult = COR_E_APPLICATION=80131600

Additional Context

JetBrains Rider 2025.3.2
TUnit v1.13.0.0 | 64-bit | Microsoft Windows 10.0.22631 | win-x64 | .NET 8.0.23 | Microsoft Testing Platform v2.1.0
Engine Mode: SourceGenerated

IDE-Specific Issue?

• I've confirmed this issue occurs when running via dotnet test or dotnet run, not just in my IDE

[thomhurst]

Can you raise this with Jetbrains please

[faustin0]

Hi @thomhurst, thanks for the reply, yes i was thinking the same but i just tried also with VSCODE and it's present the same issue :

Exception: StreamJsonRpc.RemoteInvocationException: System.ArgumentException: An item with the same key has already been added. Key: TestNodeUid { Value = RiderConsoleTest.1.1.Foo.1.1.0 }
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at Microsoft.Testing.Platform.Services.TestApplicationResult.ConsumeAsync(IDataProducer dataProducer, IData value, CancellationToken cancellationToken) in /_/src/Platform/Microsoft.Testing.Platform/Services/TestApplicationResult.cs:line 123
   at Microsoft.Testing.Platform.Messages.AsyncConsumerDataProcessor.ConsumeAsync() in /_/src/Platform/Microsoft.Testing.Platform/Messages/AsyncConsumerDataProcessor.net.cs:line 73
   at Microsoft.Testing.Platform.Messages.AsyncConsumerDataProcessor.DrainDataAsync() in /_/src/Platform/Microsoft.Testing.Platform/Messages/AsyncConsumerDataProcessor.net.cs:line 145
   at Microsoft.Testing.Platform.Messages.AsynchronousMessageBus.DrainDataAsync() in /_/src/Platform/Microsoft.Testing.Platform/Messages/AsynchronousMessageBus.cs:line 183
   at Microsoft.Testing.Platform.Messages.MessageBusProxy.DrainDataAsync() in /_/src/Platform/Microsoft.Testing.Platform/Messages/MessageBusProxy.cs:line 37
   at Microsoft.Testing.Platform.Hosts.CommonHost.NotifyTestSessionEndAsync(ITestSessionContext testSessionContext, BaseMessageBus baseMessageBus, ServiceProvider serviceProvider, IPlatformOpenTelemetryService otelService) in /_/src/Platform/Microsoft.Testing.Platform/Hosts/CommonTestHost.cs:line 228
   at Microsoft.Testing.Platform.Hosts.CommonHost.ExecuteRequestAsync(ProxyOutputDevice outputDevice, ITestSessionContext testSessionInfo, ServiceProvider serviceProvider, BaseMessageBus baseMessageBus, ITestFramework testFramework, ClientInfo client) in /_/src/Platform/Microsoft.Testing.Platform/Hosts/CommonTestHost.cs:line 171
   at Microsoft.Testing.Platform.Hosts.ServerTestHost.ExecuteRequestAsync(RequestArgsBase args, String method, ServiceProvider perRequestServiceProvider, CancellationToken cancellationToken) in /_/src/Platform/Microsoft.Testing.Platform/Hosts/ServerTestHost.cs:line 500
   at Microsoft.Testing.Platform.Hosts.ServerTestHost.ExecuteRequestAsync(RequestArgsBase args, String method, ServiceProvider perRequestServiceProvider, CancellationToken cancellationToken) in /_/src/Platform/Microsoft.Testing.Platform/Hosts/ServerTestHost.cs:line 533
   at Microsoft.Testing.Platform.Hosts.ServerTestHost.HandleRequestCoreAsync(RequestMessage message, RpcInvocationState rpcInvocationState, CancellationToken cancellationToken) in /_/src/Platform/Microsoft.Testing.Platform/Hosts/ServerTestHost.cs:line 426
   at Microsoft.Testing.Platform.Hosts.ServerTestHost.HandleRequestAsync(RequestMessage request, CancellationToken serverClosing, CancellationToken cancellationToken) in /_/src/Platform/Microsoft.Testing.Platform/Hosts/ServerTestHost.cs:line 332
   at StreamJsonRpc.JsonRpc.InvokeCoreAsync[TResult](RequestId id, String targetName, IReadOnlyList`1 arguments, IReadOnlyList`1 positionalArgumentDeclaredTypes, IReadOnlyDictionary`2 namedArgumentDeclaredTypes, CancellationToken cancellationToken, Boolean isParameterObject)
   at Microsoft.VisualStudio.TestWindow.Internal.RemoteAgent.TestingPlatform.RpcClient.RunTestsWithFilterAsync(Guid runId, TestNode[] testNodes, CancellationToken cancellationToken)
   at Microsoft.VisualStudio.Threading.ThreadingTools.WithCancellationSlow[T](Task`1 task, CancellationToken cancellationToken)
   at Microsoft.VisualStudio.TestWindow.Internal.RemoteAgent.TestingPlatform.Clients.TestingPlatformClient.ExecuteRpcCallAsync[T](Func`1 rpcFunction, CancellationToken cancellationToken)

[aomader]

I second this, seeing similar issues in Rider.

[thomhurst]

Can you try on the latest please

[faustin0]

Can you try on the latest please

working now! Thanks for the quick fix and response!