Some sort of hack or just bug?

• Halfway through a ranked game (~20 minute mark) get message that I got disconnected;

• Check in Chrome that my interwebz is still working;

• Cannot reconnect ingame;

• Alt + F4, log in and there is no "Game still in progress, please reconnect" message in client and no info about that game in match history tab;

• Rating didn't change.

tl;dr Played game that didn't really happen. WTH?