The same thing happen when the manager of one of the teams comes late in the match. Either a penalty is awarded, or a goal is scored for any of the two sides either from open play or from dead ball situations, or things like sudden yellow cards or red cards happen. This does not happen each time, but it happens way too frequently for it to be a coincidence. And yes, like you said, suddenly the bar 'shoots' in a direction and something significant happens close after.
So, as users, many of us have observed such things occurring in this game. They are no longer coincidences as such. These might have occurred due to flaws in the game engine.