-If Steam is not running when the game boots, the game now attempts to start Steam without shutting down. This allows you to play the game without Steam, but you won't have access to the leaderboards if you do so.
-Resolved an issue where players will only receive boost items even with more than one player.
-Resolved an issue where players are counted twice when calculating placements.
Update: v1.2.3 Patch 2
Source: Steam Community (opens in a new tab)