Backtrack disabled by Ice Blast?

Hex shuts off all abilities on heroes except the following:

Upgrade-granted ones, like Marksmanship, Spell Shield, Dragon Blood
Triggered abilities like Counter Helix, Backtrack, Craggy Exterior and certain other passives
Unsilencable abilities like Reincarnation
Toggled abilities like Mana Shield, Rot, Pulse Nova, Agility Gain, although they couldn't be switched for the duration of Hex

Hex also disables True Sight granted by Gem of True Sight, Burn damage from Radiance, Evasion, and Damage Block.

Auras have a fade time and will vanish after 2-4 seconds if their carrier is hexed.

Hex will not affect the unit's magic resistance or armor nor dispel any buffs, thus certain abilities like Shapeshift or Surge would still grant affected unit maximum movement speed.

Are you sure Wulfy?



From Dota2Wiki - or would "unsilencable" abilities include Backtrack? Unfortunately I couldn't seem to find a list.