new search autocompletion gets in my way

Created by: slimsag

1. Visit https://sourcegraph.com/github.com/sourcegraph/sourcegraph
2. Check the case sensitive toggle
3. Type repositoriesCount into the search bar.
4. This appears:

5. Press enter -- your search does not get ran. Very annoying!
6. Press enter again, finally your search gets ran but the autocompletion incorrectly changed my query to RepositoriesCount (capital R) even though I wasn't trying to use its suggestion. Very annoying!