[Mivereous]

It does nothing. It acts as if it were a skill from a class that you do not have equipped, such as if you were trying to use an Archer skill while being a MA/Mage. It does not turn your square blue to indicate that you are attempting to use a skill. It does not move onto the confirmation stage of Flee. Pressing Flee from the Hotkey Bar does absolutely nothing. When you press the assigned Hotkey, this is the result: