Recently i reached Bokor C2 and grind with Bwa Kayiman is really nice. But after a couple hours, keep pressing the skill key all the time is killing my hand!
So, while playing around, i noticed that i don’t needed to stay pressing the skill key. I just press and release, and the skill load entirely. But then a came back to town and the skill returned to the standard behavior and my fingers didn’t like it 
So, there’s a way to use the “loading” skills without keep pressing its keys? Or i accidentally discovered some bug which i don’t have idea how to reproduce?