Noticed the movement keys can become stuck, and need to be released and pressed again to become unstuck. Played for a day or two like this--the game's entertainment value far exceeds the annoyance of this.

Played another session and found the keys were no longer stuck--trying to think what I may have done differently this time, and realized I had launched the game normally, without GalaxyClient running. Tried launching from Galaxy and the keys get stuck again. Took this one step further and discovered it's the Galaxy overlay feature causing the issue. If the overlay is disabled, the keys work normally.

Running Mac version 1.0 (A) w/no mods.