“Stripes” gradient preset output is missing hint values

[ollicle]

The stripes sample is rendering solid black.

Generated output:

:root {
  --hdr-gradient: linear-gradient(
    to top right in oklab,
    #fff, #000 0%, #fff 0%, #000 0%, #fff 0%, #000 0%
  );
  --sdr-gradient: linear-gradient(to top right, #fff, #000 0%, #fff 0%, #000 0%, #fff 0%, #000 0%);

  background: var(--hdr-gradient);
}

If I nudge the % values in the UI the values are inserted. e.g.

:root {
  --hdr-gradient: linear-gradient(
    to top right in oklab,
    #fff, 11%, #000 0% 21%, 31%, #fff 0% 41%, 51%, #000 0% 61%, 71%, #fff 0% 81%, 91%, #000 0% 99%
  );
  --sdr-gradient: linear-gradient(to top right, #fff, 11%, #000 0% 21%, 31%, #fff 0% 41%, 51%, #000 0% 61%, 71%, #fff 0% 81%, 91%, #000 0% 99%);

  background: var(--hdr-gradient);

Same in Firefox (146.0b3) and a webkit browser (Orion).