I turned on reduced animation on my iPhone 6S running iOS 9.1 (not because of performance issue, I just don't like prolonged animation on basic UI). With this setting, there's still some effects. Eg. going into folder, there's fade in/out effect. Also when running app, etc. However, I noticed that sometimes even those animations are missing. Eg. when I open a folder of apps, it's just cut into the opened folder instead of the typical faded in/out effect. This behavior doesn't change even if I turned on animations back. The only way to "fix" this is to reboot the phone. Anybody experience the same issue?