first time starting up the game i have this. it doesn't show on the dock nor force close options but it's running and patching.
I'm pretty sure that's because it wasn't made for Mac, there's some fancy shenanigans involving bringing pc things over. hurr; don't ask me about that
All i know is that Need for Speed does that for me as well; as in doesn't show up in force quit or dock menus, but it's definitely around town. Look at your activity moniter (in Applications/Utilities) and it'll be in there, so you know that it's a real application
:P If only i got to be a part of the testing... maybe next time, Riot will choose me
if there's still time Riot, could I help out a bit? I know a lot about Macs, had them throughout my whole life (forcefully :P) and I'd love to help, and I promise I'd give it my all. Thanks again!