Default Odd Google Now Launcher issue?

The app grid on my launcher alternates every time the launcher restarts, between 4x5 and 4x6, and I have no idea why. My DPI is stock 480, and it happens on several ROMs I've tried (Mahdi, Carbon, ParanoidAndroid), so it seems to be a Google Now Launcher issue and not related to the ROM. Anyone have any idea why? Its not so much of a problem as an annoyance, as every time I reboot my phone, I have to kill the process so that I get my preferred size (4x5) back. Thanks!