Encoding gets messed up with v2

With v1 this works great, but I'm pretty sure that v2 saves the files as ANSI and not utf-8.

I'm using asp net core, and the API returns this:

return new FileContentResult(Encoding.UTF8.GetBytes(sb.ToString()), "text/plain;charset=utf-8");

In angular I save the file like this:

saveTxt(result: any, filename: string) {
const blob = new Blob([result], { type: 'text/plain;charset=utf-8' });
saveAs(blob, `${filename}.txt`);
}

I reverted to v1 till I figure out how to fix this.