https://github.com/Automattic/sensei/blob/master/includes/class-sensei-course-results.php#L56
The function should add "Course Results:" to the start of the page title on the course results page, but it doesn't appear to do anything.
Submitted a pull request :)
The code was using wp_title to modify the title which no longer being used in newer version of WordPress (>= 4.4)
Added document_title_parts to support newer version
It can be tested by switching between "Twenty Fourteen" theme (older version) and "Twenty Sixteen" theme (newer version)
Thanks @ivantedja - we'll get this reviewed for the next release :)
I still don't see that in the title of the course results page:

Same in Twenty Twelve, Twenty Fourteen and Twenty Sixteen.
@danjohnson this function is used for altering the <title> html tag on <head>. It works as expected for me.
@pgk ah sorry, I thought it was for the heading on the page :D
I think you have the wrong danjohnson :-)
On 18 Dec 2016, at 18:30, Dan Johnson notifications@github.com wrote:
@pgk ah sorry, I thought it was for the heading on the page :D
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I think you have the wrong danjohnson :-)