[Kameron8]

Earth and Wind domain spells you gain from Youkai do not seem to gain the damage bonus from Desert Wind. To test, I hit a target with several Will + half youkai Level spells and they did the same damage.

[Rendar]

I'm pretty sure they are only considered 'spells' for certain effects. Like silence.

[Chaos]

The following Youkai skills have been changed into Spells. Note that Evoke skills do not receive damage bonuses from items that would boost Spells, nor do they receieve Power bonuses from Tome weapons. This change simply makes Silence a more dangerous status for Summoner classes and may force them to summon the Youkai in question if they want the skill to be used.

Yeah, this isn't a bug.

[Kameron8]

Oh awesome, I must have missed that. That patch came around right about the same time I started playing.