This creates an external reference with [some text](https://www.ietf.org/ "An internal title") in the link, with an internal title that should be removed.
is processed to:
<t>This creates an external reference with <eref title="An internal title" target="https://www.ietf.org/">some text</eref> in the link, with an internal title that should be removed.</t>
That will throw an error in xml2rfc because <eref> cannot have a "title" attribute.
is processed to:
That will throw an error in xml2rfc because
<eref>cannot have a "title" attribute.