Question: Spotlight crashes after typing a few letters since Safari 12 update
So this just started happening after updating to Safari 12 a few days ago.
When I invoke Spotlight, from Finder (command-spacebar) or from menubar, and type a few letters. It immediately vanishes because it crashes.
I forced Spotlight to re-index several times and it briefly works until the indexing is done and then the problem returns. It also happens while using a different Admin account. After a lot of troubleshooting, I can get it to stop crashing by only UN-checking the "Bookmarks & History" option in the Spotlight pane of System Preferences (all other Spotlight options are checked). I think it's a bug or issue with Safari since it's only "Bookmarks & History" and the problem coincides with the update to version 12.
This problem is 100% repeatable.
Here is a portion of the crash log. I can provide more of this log upon request.
Process: Spotlight 
Version: 1.0 (1075.40)
Build Info: SpotlightUI-1075040000000000~244
Code Type: X86-64 (Native)
Parent Process: ??? 
Responsible: Spotlight 
User ID: 501
Date/Time: 2018-09-20 23:48:51.219 -0500
OS Version: Mac OS X 10.12.6 (16G1510)
Report Version: 12
Time Awake Since Boot: 34000 seconds
Crashed Thread: 4 Dispatch queue: com.apple.root.default-qos
Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Illegal instruction: 4
Termination Reason: Namespace SIGNAL, Code 0x4
Terminating Process: exc handler 
Application Specific Information:
XPC API Misuse: Release of last reference on a suspended connection.
Application Specific Signatures:
Mac Pro (Mid 2012), macOS Sierra (10.12.6), 32 GB, 3.33 GHz 6-Core