[Zubersoft]

If you want that behavior, you have to embed the annotations into page 5, in your example. Just annotate page 5, tap the three dots at the top right, tap "Embed Annotations", change it to only embed annotations for the current page and tap OK. Then your annotations will show up on both instances of page 5, but you will lose a small amount of functionality for those annotations. You also then need to enable the option to allow editing of embedded PDF annotations if you want to change those.

Alternatively, just select all your annotations on page 5, go to the next instance of page 5, long press and select the option to paste the annotations to their original location.

Mike