Storyline 360: Next button enable in SCORM output is not working as expected

It’s an odd issue that I don’t think I’ve experienced before. If your logic and triggers work in Review, I don’t see any reason why they wouldn’t work in the LMS. Have you tried publishing to Web or testing in SCORM Cloud to see how it behaves there?

Would you mind sharing a simplified version of a few slides so it can be troubleshooted?

However, I would agree with PhilMayor​'s suggestion and rely on visited states instead. You could use a single T/F variable (e.g., slideVisited) that becomes True when all objects are visited, along with a trigger that changes the state of Next to Normal once all objects have been visited. Then, use a timeline start trigger to disable Next if slideVisited is False; otherwise, change the state of Next to Normal to ensure it remains enabled upon revisit.