Why is Google settings "phone search" page BLANK?

In Google Settings I select "search & now", then "phone search"... why do I get a completely blank page? On my friend's phone there are four items to check, to include in a search or not.

Both Droid Turbos just upgraded to 5.1. My disabled apps don't include anything I'd expect to affect this.

This (somewhat intermittent) problem no longer seems to occur after the Marshmallow upgrade.

Thanks for the update, especially after such a long interval!:)

Nice update!