Unable to use Esc, Spacebar suddenly in game. Happened 3-4 times this year.

The last game I was Bard, opposing team was taking Dragon, I "E'd" in and my Lucian smited for the steal. As I was running away from impending death, I typed, "later nerds!" or something to that effect (for giggles, mind you), and as soon as that was entered, my Spacebar suddenly didn't want to snap back to center-on-champ. My Esc key didn't bring up the menu. I could type just fine... but then all my skills were acting like they were on Quick-Cast. However, once I attacked a unit, I could not move away until it was dead. Minion or champion. In this instance, I was able to move away after the unit died, due to me having Auto-attack off, otherwise I would have to take out ALL targetable units. The only way I was able to get all my functions back was by Command-Q, reconnect.

This has happened roughly 3-4 times this year. I have my .gz file. Don't know where my Logs are on Mac. Help!

(I hit Return before I could add Linex to Poll, sorry dudes.)