Previously, closing the game window would fully quit the application but now it seems that the process remains active in the background, preventing me from relaunching the game (app already running). The app runs indefinitely until manually killed.
I am using 'htop' to locate and kill this process every time that I "close" Robocraft. This has only begun happening in the past two days. It happens whether I close the app using the in-game Quit menu option, or by closing the window itself.
Ubuntu 14.04 64-bit