I noticed after installing Safari 12 that my Spotlight searches would crash Spotlight. After typing in a few characters, the search field would disappear and the magnifying glass in the upper-right corner of the screen would disappear briefly then reappear. I discovered in System Preferences if I turned off the "Bookmarks and History" option under the Spotlight tab the problem went away. I thought maybe a bookmark or history file had been corrupted locally, so to test my theory I created a brand new user account. The problem was absent and then after I associated the new account with my iCloud account it presented itself. Is anyone else experiencing this problem?