Just updated to v0.1.5301 and have the following problems:

• Cannot use drop-downs in menus (so can't mark ready in lobbies, can't configure skirmishes, etc)
• When clicking to buy/sell resources it buys/sells 20 (or 200 with shift)

It seems as though every click I make is being interpreted as two clicks.
Managed to complete daily challenge with no other breaking problems.

Running on an Mac w/ Mavericks.
Reverting to the previous version (using Steam beta) fixes.
Haven't had any other problems in previous versions.