Can't use "Bond of Life" (Mount healing skill)

[Rembar.7298]

With the last mastery point, we received a healing skill for the mounts, but there's a bug with that:

If you have the default setting of the game (having the skill in the key 6), you can just press that key to use the skill, but if you have a different configuration (like me), having it in the key C, you can't use the skill by pressing the key. You have to manually click on the skill with the mouse to use it, instead of using the keyboard if you have a different setting for the skills.