Radek Zikmund

This seems to be by design of StreamWriter. The code defaults to `UTF8NoBOM` https://github.com/dotnet/runtime/blob/6072e4d3a7a2a1493f514cdf4be75a3d56580e84/src/libraries/System.Private.CoreLib/src/System/IO/EncodingCache.cs#L10 https://github.com/dotnet/runtime/blob/5f067ce8b50087e032d13a1b97ae5ec39fc54739/src/libraries/System.Private.CoreLib/src/System/IO/StreamWriter.cs#L75-L131 We should update the docs to reflect this. (also, the nullability annotations in the source...

@kotlarmilos hey, are you working on this? despite the `disabled-test` tag, we still see this failure in main on OSX.26.Arm64.Open cc @liveans

@kotlarmilos see the table in the issue, e.g. https://dev.azure.com/dnceng-public/public/_build/results?buildId=1146290&view=ms.vss-test-web.build-test-results-tab&runId=31632538&resultId=223760&paneView=debug Since the tests are failing or ARM64 as well, should we include that in the issue description?

> Does anyone have a workaround for this problem? The workaround is to install the client intermediate certificates into the Windows certificate store (I think the "My" store is the...