Mac screensaver always goes to start of photos library

That doesn't work either, I've tried it. Although the check box ticks OK, when the screen saver starts, it is still from the beginning and goes through in order. When I go back to the screensaver preferences, the tick box is unchecked. I had the same problem in OS Catalina but it did move on to a new starting point after a while and then stick at that and then move on again - OS Big Sur just stays stuck at the start. Earlier version just picked up from the last picture displayed.

Thanks for your suggestions. I tried setting up a temorary photo library and got the same result. I also tried using some of the native Apple screen savers and again they started at the begining each time. I guess that is how it is meant to work. In safe mode the screen saver would not work with anything, just gave a black screen. It looks like I am stuck with it. It's disappointing, I used to enjoy the steady progression through my whole library, now I will have to set up a specific selection to fit the timescale of the screensaver. An Apple designer once told my boss that the essence of good design was often the little things that gave the user a sense of joy - to me this was once of those joy-giving features and now the joy is missing!