Eye of Winter + Elemental Storm not working

Stormweaver's Ascendancy Skill Elemental Storm is an orb, so it is supposed to buff Eye of Winter's Damage when it passes over the storm.
This interaction is not working as it should. It is either:
- Not buffing its damage at all.
- Or not using the corresponding element of the storm.

I have tested it using the Elemental Conflux buff to make sure the buffed element should be the one that would trigger the storm, but it is always cold.