Troubleshooting the "up-to-top" button's fading behavior

The community member is having an issue with an "up-to-top" button not fading out when it reaches the bottom of the section. They have the animation set on "section_layout508". The comments suggest that the issue may be related to the footer, and that the percentage-based calculation may be based on the page rather than the section. However, there is no explicitly marked answer provided.