macOS 10.12.3 (16D32) on a 17,1 iMac: Opened Sysytem Pref/Spotlight/Privacy added my main Sierra HD to the list, then selected Sierra HD and deleted it from the list, then closed System Prefs. There is no indexing taking place. There is no dot in the Spotlight Glass logo to tell me it is reindexing. Has indexing changed in Sierra 10.12.3 (16D32)? --- Post Merged, Jan 24, 2017 --- Nevermind, apparently no dot appears in the spotlight glass in menubar in Sierra. The spotlight search window shows an active indexing bar that I did not see before.