Reddits top post is the Lions vs the Refs. What shenanigans did I miss?
The refs made the right call. With only a few seconds left in the game, Stafford throws a quick missile to Golden Tate. It appears to be a TD, but it turns out he was down at the half-yard line. A compulsory referee/booth review confirmed this.
Here's where it gets problematic. The new rule is that after a review of such a play, there's a mandatory ten-second runoff of the clock if the team that completed the pass is out of timeouts. The ten-second runoff, in this case, caused time to expire. The Lions are, to my knowledge, the first team in NFL history to lose a game in such a convoluted way, but the referees applied the rulebook flawlessly and shouldn't be blamed.
Theoretically, the mandatory runoff of the clock makes sense, but it might be a little more fair to make it something like six seconds.