Why is Google settings "phone search" page BLANK?

[UrDroid]

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.

 

[UrDroid]

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

 

[B. Diddy]

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

 

[AlphaTango414]

Nice update!