Streams are broken in electron

I have the following trivial method:

public static Stream TestStream()
{
    return new MemoryStream(System.Text.Encoding.UTF8.GetBytes("hello"));
}

I'm noticing a different behavior when I use it in Electron compared to Node.js - even though there's no error, the Electron version appears empty:

console.log(MyClass.testStream().read()); // null in electron, Buffer in Node.js

Potentially related to https://github.com/microsoft/node-api-dotnet/issues/383, although I'm unsure if this implementation somehow uses external buffers?