@pw-pix yes I see how that could happen. In this instance though it's not that the camera thinks it should always be at 1/8000 it's that it think I turned the shutter speed dial from A to 1/8000 even if I haven't touched it so then to turn it back to A which is technically already is in I need to move the shutter dial off and then back onto A. This can happy multiple times each time I'm composing a shot.