VsTest/Azure DevOps - Specflow+ Runner Test Standard Output logs individual characters
SpecFlow Version
3.9
Which test runner are you using?
SpecFlow+ Runner
Test Runner Version Number
3.9
.NET Implementation
.NET Core 3.1
Project Format of the SpecFlow project
Sdk-style project format
.feature.cs files are generated using
SpecFlow.Tools.MsBuild.Generation NuGet package
Test Execution Method
TFS/VSTS/Azure DevOps – Task – PLEASE SPECIFY THE NAME OF THE TASK
SpecFlow Section in app.config or content of specflow.json
{ "bindingCulture": { "language": "en-us" }, "language": { "feature": "en-us" }, "livingDocGenerator": { "enabled": true, "filePath": "TestExecution.json" }, "stepAssemblies": [ { "assembly": "Helper" } ] }
Issue Description
I am attempting to get my Specflow tests running on a VSTest task in Azure Devops. Everything seems to be going smoothly so far, I can see that the task picks up all of my tests from my .dll, and finds the very first test, and begins to process it. At this point, the test completes in the background (which I can see in my local logging as these are API tests), but the VSTest task does not see this.
Instead, the task will continue to run for a long time. I cancelled it, and went to view the logs:

Here, I can see the task is somehow writing every single character from my Specflow Test Output as an individual thread item. I can see when I compared my test output from Visual Studio that this is the exact same text:

In the mean time, I can see in the actual Azure Devops task logs that it did seemingly TRY to run my test (and failed) which is fine, but it was another 2 hours until the next test started again (this screenshot is from another attempt hence varying timestamps from above screenshots):

I have no idea how or why the VSTest task would behave this way, I can't see anything obvious that relates to logging, and I wouldn't expect the task to behave this way.
Steps to Reproduce
Here is my VSTest task and Release pipeline set up:

Link to Repro Project
No response