I occasionally get a strange thing appear on laptop. It's a lock with an incomplete circle around it and one end of circle has an arrow point on it.
It goes away, but what does it mean? Should I be worried?
//The “padlock with a circular arrow” icon means that you the Screen Rotation is locked on your iPhone or iPad, so your display will not automatically change between “portrait” and “landscape” view when you rotate your iOS device//
So no, nothing to worry about