Spellblade's Flame walker node and threshold skill

Hello everyone.
The ability you unlock when putting five points in Flame Walker issomething along those lines:
“Each of your fire auras has a 50% chance to reduce the enemy’s fire elemental resists by 5% every second.”
The text doesn’t say that the damage type can be converted into lightning or cold. And the nodes to convert fire auras into lightning or cold do not mention it either.

But it wouldn’t make sense for the threshold passive to only apply to fire resistance when the fire auras can be converted into other types.
Do you guys thing this is an oversight from the devs, or that the text is misleading?

From the patch notes. It seems the description could use elaborating on the point, though you only have so much room to work with. But yes, assuming it was implemented in the fashion described in the patch notes, then it should convert.