Game Map - unable to complete the stage
When activating Surface Mode in a Course Presentation it disables the ability to access the Summary Slide.
If you do not access the Summary Slide within a Game Map stage (where there would normally be a Summary Slide*) the stage does not register as completed.
*Course Presentations including information content only do not cause any completion issues, it's only Course Presentations with questions that then form part of the Summary Slide.