Reproduction
A ~picture~ gif is worth a thousand words.
Expected behavior?
If the user opens the autocomplete dropdown and clicks to another playground tab, the dropdown should either close automatically or the user should be able to click away from it to close. I personally would prefer the first option.
Current behavior
Reproduction A ~picture~ gif is worth a thousand words.![repro](https://user-images.githubusercontent.com/2824184/47231361-81663080-d381-11e8-8989-07580124c240.gif)
Expected behavior? If the user opens the autocomplete dropdown and clicks to another playground tab, the dropdown should either close automatically or the user should be able to click away from it to close. I personally would prefer the first option.