Hello again Ian.
I've upgraded to 1.10 and have added the short code viewonmap="true" to my lists. My list is two different categories on the same page to split it up a little since there is 24 placemarks on the map.
The issue is only the left row works. When you click' View on Map' on any of the items from the right list nothing happens.
Here is a link if it helps diagnose the issue.