Exit button not showing course completed in LMS

Hello,

When users are completing the module and pressing exit on the results page the user exits the module but isn't registered as course completed on the LMS.

When I tried trouble shooting with the LMS and they came the conclusion that the internal exit button isn't working correctly and suggested I remove the exit button opting for their external exit button instead.

When I informed them that the exit button works fine when I upload to SCORM cloud they responded

"I've observed many times that it auto corrects and shows the expected behavior which might cause a little confusion and not necessarily work the same way in the LMS. Not specifically us but in LMS it might work differently because Scorm Cloud knows you're uploading a scorm package"

Can you give me some direction on a possible fix?