When cheap hardware acts like it doesn't follow the spec, no one digs too deep, because it's always going to be quite frequent, and there's nothing you can do a

When cheap hardware acts like it doesn't follow the spec, no one digs too deep, because it's always going to be quite frequent, and there's nothing you can do about it. It's very rare that it turns out to actually have been following the spec, and you had the spec wrong. That's the practical reason.