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I noticed that
TaskObserverBase
internally uses aTaskCompletionSource
without passingTaskCreationOptions.RunContinuationsAsynchronously
.https://devblogs.microsoft.com/premier-developer/the-danger-of-taskcompletionsourcet-class/
https://github.com/davidfowl/AspNetCoreDiagnosticScenarios/blob/master/AsyncGuidance.md#always-create-taskcompletionsourcet-with-taskcreationoptionsruncontinuationsasynchronously