Random behat errors with Firefox in @atto with "Show more buttons" button

Testing scenario 1: hover Login as admin Create a new course or visit the course settings page for an existing course On the course setting page hover over the questionmark icon behind the "Course full name label" in the course settings form Verify a popup does not show Now click the questionmark icon instead of just hovering Verify a popup shows Navigate to the site Calendar Add a new event for today In the "Monthly view" block in the right side of the page hover over your new event Verify a popup shows Click the new event in the "Monthly view" block Verify a popup shows Testing scenario 2: Manage files Access to the course. Create a label. Click the Atto button "Manage files". Check no error is displayed at the bottom of the modal.