Does not work as of latest VS version (17.14.20)

[MalcolmWilkins]

I have been using this library successfully for a year or so to run VS tests on some tooling that I maintain. However as of the latest version of VS (VS2022, 17.14.20) the compiled XUnit tests are no longer visible in VS test explorer.

The issue is reproducible with the VsixTestingSamples repo: building the VsAsyncPackageTests solution shows only one test in Test Explorer, not two, and the test when run fails with a message:

System.ArgumentOutOfRangeException : Specified argument was out of the range of valid values. Parameter name: version

I'd like to know if there is any likelihood this useful project (which uniquely meets a need that is not met anywhere else at present) can be maintained into VS2026 .