The animation for the vortex used in many spell effects (Evocation, Windfury, any wind ele stun) is incomplete and doesn’t display its entire animation, causing it to end early.
With evocation, the vortex simply disappears entirely whenever the Mage finishes channeling it, which is wrong. The funnel should complete its animation after the Mage finishes channeling. On a separate note, the Mage and Funnel should be dark blue (unless selected).
For Windfury, the Vortex only plays around the Shaman’s feet for about a half-second and then disappears entirely, when it should build up around the Shaman’s entire body.