Wrong font size

[TiAlRo]

I have the following code:

const textEncoder = new TextEncoder();
  const buffer = textEncoder.encode(`{\\rtf1 A{}A\\fs16}`).buffer;
  const doc = new RTFJS.Document(buffer, {}),
    renderedDoc = await doc.render(),
    div = document.createElement("div");
  div.append(...renderedDoc);

After execution, the variable div.innerHTML has the value
<div style="text-align: left;"><span>A</span><span style="font-size: 8pt;">A</span></div>.

I would expect the variable to have the value
<div><span>AA</span></div>
(the same as for the rtf document {\\rtf1 AA\\fs16} without the group).

[TiAlRo]

We are using now the officeconverter als alternative to this library.