Time: Since 4.2?

Context: Raid rift dropped essences with air affinity (Stormstone) has wrong resist stats on them.

Expected: Raid rift dropped essences with air affinity (Stormstone) has wrong should have air resists on them.

Observed: I was upgrading freshly dropped essence Rolling Stormstone of the Malevolent, just noticed it had water resist on it instead of air resist, since both name and icon of essence pointing air affinity of the essence then I checked if any other essence i had with Stormstone on it and noticed other essence Rolling Stormstone of the Covert also had water resist on it.

Screenshot: This is screenshot of both essences taken from game.