Parenthesis make attributes disapper

[matklad]

(some text){.attr}

{
  "tag": "doc",
  "children": [
    {
      "tag": "para",
      "children": [
        {
          "tag": "str",
          "text": "(some text)"
        }
      ]
    }
  ],
  "footnotes": [],
  "references": []
}

There's no trace of .attr in the output, and no warnings.

I feel like something other than silently discarding attributes should happen here, though I am not sure what exactly