EXIT course button does not work

This works in preview mode but not on LMS (Zensai) or SCORMCloud.

Version 12.4.0.20

User completes assessment – is directed back to home – exit course button page is shown – exit course button with the action: Exit course. It does not exit course.

How else am I supposed to allow the user to exit the course?

I have seen a few posts mention setting the course end action of running some JavaScript. Surely this authoring tool has the functionality to allow the user to complete course and the assessment results be passed to the LMS

Thanks in advance for any help