summaryTrendStats option doesn't affect the k6 REST API results

[na--]

Running k6 with custom trend columns like this: k6 run --linger --summary-trend-stats="min,med,avg,count,max,p(85),p(95),p(99),p(99.9),p(99.999)" github.com/loadimpact/k6/samples/thresholds_readme_example.js

And then calling the REST API /v1/metrics method: curl -s 'http://localhost:6565/v1/metrics' | jq '.data[] | select(.id == "group_duration")'

I'd expect to see the percentiles I configured in summaryTrendStats, but instead I see something like this:

{
  "type": "metrics",
  "id": "group_duration",
  "attributes": {
    "type": "trend",
    "contains": "time",
    "tainted": null,
    "sample": {
      "avg": 128.2877491095891,
      "max": 146.327711,
      "med": 127.666555,
      "min": 123.76435,
      "p(90)": 131.6244158,
      "p(95)": 133.2135961
    }
  }
}

Not sure if this is a bug, since after all, the option is supposed to affect the end-of-test summary columns. That said, I expected it to modify the REST API results, and given that there's no other way to configure them, I don't see why it shouldn't.