PipeReader.AdvanceTo throws InvalidCastException

I'm puzzled by the fact that PipeReader.AdvanceTo accepts a default(SequencePosition) but throws InvalidCastException when provided a position from an empty sequence. Is that by design?

var pipe = new Pipe();
pipe.Reader.AdvanceTo(default); // this works
pipe.Reader.AdvanceTo(ReadOnlySequence<byte>.Empty.Start); // this throws InvalidCastException

Should it throw ArgumentException instead given the SequencePosition came from an unrelated ReadOnlySequence<byte>?

I'm a bit puzzled that PipeReader.AdvanceTo can be called before reading anyway.