When you’re view the preview of a markdown on the right side of your editor, you can actually set that the editor view does not update when you scroll through the markdown preview, and the same goes the other way around. Go to Settings (or CTRL+,), and type markdown. You will see these settings:
- When a Markdown preview is scrolled, update the view of the editor
- When a Markdown editor is scrolled, update the view of the preview.