"Flame Breath" not working properly with "click to move"

Greetings!

The title is pretty straightforward, this particular ability is malfunctioning. When I try to click to move while I channel "Flame Breath" it takes me out of the skill and it ends immediately. I am basically stuck in place and unable to move if I want to continue channeling it, which is a huge downside. I was excited to unlock it but now I feel disappointed.

I heard it can be used with WASD without any issue, but I shouldn't be forced to change my way of playing the game just to be able to use a certain ability.