I'm not sure that this is a bug, but it may be something to be aware of, or it may be no concern at all. With the version released August 27, the memory usage after having opened the game is > 100 MB of RAM. Also, the mouse movement over the window with the game open is not smooth (it is jerky). This is on a very powerful computer that was fine with the previous version. I haven't changed anything else on the computer, and I rebooted it thinking that maybe this would help. So, if anyone else has noticed this and can confirm it, please do so. Otherwise, I will have to assume that there is nothing wrong with the game and I have some issue with my computer.