Quick cast with range indicator

I've been using this feature a lot lately, and after a while I noticed something: 9 times out of 10 (especially with ignite) poin and click skills don't work wit it. What skills I've noticed it on are:

• Alistar's headbutt: unless I'm at least 100 units inside the skill range it won't start, and often even if the enemy is just right in front of me it just doesn't start;
• Ignite: I'm not joking, 9 ignites out of 10 it won't go and I'll die like an idiot because I though ignite worked;
• Nautilus' ult: Same as headbutt, if they're just near max range or I press the skill too fast it won't go off no mater how many time I use it;
• Nocturne's e and ult: Same as above;
• Xin Zhao's e: same, if I click the skill too fast or the enemy is near max range the skill won't start.

I'm pretty sure I've experienced it on other skills, but right now these are the ones I can remember. Is it just me or does this happen to others? I lose a lot of fight because of this and it's pretty frustrating when I pressed ignite 5 times and I still see it out of cd when I'm dead and the enemy escapes with 10 hp, or when I press headbutt and it just won't start no matter what, especially when I have to combo it with pulverize and Alistar pulverizes on the spot even if the enemy was clearly INSIDE the cast range (The whole model was inside, it can't be possible that I'm always seeing things right?).

I don't know if it's a bug or it has to do with me using it badly (or maybe my keyboard screwing me for fun). I find it incredibly usefull (when it works it makes whateve I need to do so much easier, also I can actually see the range of the skills I'm using, which is good when using skills near max range) but it's just so frustrating when it just screws up whatever I'm doing.

So anyone having problems with the feature other than me? (I don't know what to think anymore, really).