I'm experiencing similar behavior seemingly at random. I'm using the Adapt Framework (4.2.0) and it happens for some questions but not for others. I noticed that for the ones where it isn't working as expected, I'm also not getting the final button text that I've added to that specific article (I get the default text instead). (I do get the right text if I set it to be visible before completion and change "text" rather than "finalText", but still not the right scrolling.) It does seem to be an inconsistent user experience.