Even though a user was logged in, they aren't being used as the author by default when creating entities.
(this was working in previous versions I think)
Example:
Scenario: The logged in user is set as the author of a new entity
Given I'm logged in as a user named "Sue" with the "authenticated" role
And pages:
| title |
| my test page |
Then the author of "my test page" should be "Sue"