First Win Of The Day bug [Uh... Crash? I don't know...]
There is a bug related to the First Win of the Day bonus, specifically when you fail to connect. For some reason, if you fail to connect to a game, and the FWotD bonus is available, and your team wins without you, then the bonus is considered used, but you do not receive the IP bonus.
Recreating the bug Step 1: have the First Win of the Day bonus available. Step 2: join a game. Step 3: lock in a champion, etc etc. Step 4: when the game is loading, fail to connect to the game. Step 5: wait for your team to win without you (this is the hard part, unless you connected to a bot game). Result: FWotD bonus no longer available, you do not gain 150 IP from it.
I have had this bug happen to me a total of once. I do not wish to recreate it, as every time I do would mean 150 IP lost forever. Discovering this bug was an unpleasant experience, and I do not want other summoners to go through the same disappointment of missing out on FWotD.