One of the greatest features that sets Android apart from most of its mobile counterparts is the highly versatile sharing system that allows apps to declare themselves as targets for different types of media you might want to send from one app to another. All of this is accomplished with the familiar Sharing dialog, also known as the Chooser. Unfortunately, since people began using KitKat, a strange bug has turned up that may randomly cause your last chosen action to be reused automatically instead of allowing you to choose something different each time.