Update:
I updated the version of PHP to 7.4 from 7.0.33 and the workaround now works in my production environment.
Thanks,
Ken
Thanks,
That workaround seems to address the issue on my development server, but I am unable to change any settings on the site that is our production site which is on a different server.
I can make changes to the List Display Settings on anything except for the Allow Empty Search, Split Search Phrases and Strict User Searching settings.
Is there something else I can check?
Best,
Ken