This update fixed lots of multiplayer bugs, here is the list below:
-Fixed sound that wasn't synced between clients
-Fixed Issue where you couldn't play more then one multiplayer round without the game breaking
-Allowed players to earn coins from multiplayer
1.2 Update!
Source: Steam Community (opens in a new tab)
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 6484833 · public branch
Steam updated · First observed