Hi, I've had this problem since a couple of patches ago where my self cast shortcut keys take sometimes 2 or 3 times to actually cast the spell on myself. For example I have keys set up for Morgana's black shield, before I could press it and the shield would appear instantly on me, but now (for at least the past 3 weeks) its taking several attempts to cast it, often resulting in death. The same is true for other champions, Sivirs spell shield, Orianna's protect, Kayle's intervention and so on.
I'm a pretty average player, I only learnt a few weeks before about self cast short cuts and smart casting and those have helped me to become a little bit better, however now I'm feeling as if its completely unreliable. I wonder if anyone else is having the same issues or if there's a way to fix it.