Da Du es nicht erwähnst – 'Alles' schließt das von mir beschriebene direkte Löschen der Index-Dateien ein?
Und hier gibt es noch etwas:
https://discussions.apple.com/thread/8547722
>I believe it has everything to do with the Safari 12 update as a bunch of threads just popped up reporting the same issue. Turn OFF (uncheck) the "Bookmarks & History" option in Spotlight pane in System Preferences. The problem will stop until Apple fixes Safari.
https://discussions.apple.com/thread/8547722
>I believe it has everything to do with the Safari 12 update as a bunch of threads just popped up reporting the same issue. Turn OFF (uncheck) the "Bookmarks & History" option in Spotlight pane in System Preferences. The problem will stop until Apple fixes Safari.