Camera Lock bug

It's not easy to prove and has a reproduction rate of about 10-15% but I usually play on camera lock, I occasionally tap y to aim my ability across the map but upon tapping y again the camera doesn't lock back into place, only after I click the camera lock button over the minimap 1 or 2 times will it allow me to relock my camera. It sometimes harms my gameplay and can be pretty annoying.

Occurrence rate : 10-15% Steps:

1. Play a game on summoners rift
2. Pick a long range champ ( , , )
3. Play on camera lock until you must aim your long range ability
4. Use y to take yourself off screenlock to aim your ability then return to screenlock with y
5. You will most likely return to screenlock, as I said it does not happen often but nearly every 2-3 games