The option "Show only imported links" does not work ("Recordings only" type)

Instances of "Recordings only" type SHOULD show all the recordings in the course by default. That is the intended behaviour. BUT, there is an option for showing "only imported recordings" that does not work.

Steps to reproduce

• In a course with some activities with recordings, create an instance of the type "Recordings only". Open the instance. All the recordings from the course should be shown.
• Edit the activity, under the "Recording view" section, select "Show only imported links". Save and display

Expected behaviour

The list should not show any recording.

Actual behaviour
The list shows all the recordings