Blazor Server doesn't display special characters

I have a problem related to Blazor Server, where I cannot use spanish characters like "ñ, á, é, í, ó, ú", because they are being replaced by this char: "�".

I tried with these two approaches, but I get no result nor any change:

var supportedCultures = new[] { new CultureInfo("es-AR") };var options = new RequestLocalizationOptions{    DefaultRequestCulture = new RequestCulture("es-AR"),    SupportedCultures = supportedCultures,    SupportedUICultures = supportedCultures};

And

app.UseRequestLocalization(new RequestLocalizationOptions()    .AddSupportedCultures(new[] { "en-US", "es-AR" })    .AddSupportedUICultures(new[] { "en-US", "es-AR" }));

But it keeps looking like this:

EDIT: Something I haven't mentioned is that in a InputSelect it looks like this:

And it works out of the element. It works in "Pages/", but it doesn't work in "Shared/" and the InputSelect element.