The natural language query is almost impossible to use

If you say any of the following:
- How many users on mobile last week? (google’s own recommended query!)
- How many users visited the website with their cell phone last week?
- What proportion of users visited the website via their mobile phone last week?

All result in the same output:
“Users for the city of Mobile” (Alabama)

I can’t believe this made it out of testing at Google.

AlbuquerqueFan about Google Analytics, v3.6.1