I've noticed when playing a straight game (not sure if it happens in any other game type) and someone leaves when your on a run, if youve got a shot lined up at the point when they leave, the curser jumps and obviously you miss! is this just me it happens to ?

Nah Lass i experience the same not in other formats just straight

I had the same problem before in straight!

Opponent left game when i had the right aim, and my cursor jumps again to other place and i just take my shot when he left, it was a miss!

it happens in all game types, especially when playing guests.

i don't know the cause of it, nick may know but thats a guess.

Yep, just happened to me playing standard 9 ball.