When Chloe incites a woman to slap her fiancé, the woman throws her engagement ring across the room. Cal can be seen crossing the end of the room to retrieve the ring. However, when the ring is thrown, it clearly bounces off a pole, back towards the person who threw it. A man (cast extra) who is seated even points back to where it lands, while Cal hurriedly moves in the opposite direction.
In summary, the position where Cal runs to retrieve the ring is inconsistent with where the ring actually lands.