Gone back to Yosemite after running out of patience with High Sierra. Now no more signing out of websites, no more daft message telling me I can't use full screen when I am in full screen, A calendar I can set new events on again, Reaper works just as well, everything runs just as well if not snappier. Now trying to return to Snow Leopard where I can ditch all the silly Mac apps like Chess, Dashboard, Game Centre, iTunes, iWebb, Launchpad, Mission Control, Photo Booth, Photos, Reminders etc. etc and run a lean machine again. And not feel walled in by Appledom. Enough.