Continue button disappearing in completed Rise courses

I see this is an older thread BUT the problem persists. I have created detailed engineering courses with a full assessment at the end. Before the users take the assessment, I have used a button to allow them to review the material as many times as needed BECAUSE Rise does not properly restrict navigation if the menu is visible and we did not want an open-book type assessment, so it was logical to use CONTINUE buttons to let the user navigate. Unfortunately, this behaviour has now come as a nasty surprise on the cusp of the course being launched. Luckily, I caught in during final staging, but I will now need to find another workaround. Very disappointing.