With Mac OS Mavericks and Chrome 35 : everytime I start my computer, the first time I launch Chrome, it starts in fullscreen mode. If I exit fullscreen, quit Chrome and then restart it, it's normal. If I reboot (I don't check "open my apps on startup") and re-launch, it starts again in fullscreen.
Why does it do this ?
Actually after further testing, it doesn't always start in fullscreen after a reboot, it seems pretty random.