Even after removing the Microsoft.VisualStudio.Threading.Analyzers package in version 1.0.3, it is still included as a dependency through Microsoft.VisualStudio.Threading, which causes build failures due to VSTHRD200 warnings.
Similar issues have been reported with other packages, and Microsoft has proposed a solution: microsoft/vs-threading#1429.
Would it be possible to use Microsoft.VisualStudio.Threading.Only instead to avoid this problem?