The problem is when you click on the map (on the left, over the word “Google”) it takes you to a googlemap page with the same area as the map it comes from, but without the direction or coordinates and without the icon.
Maybe I am doing something wrong but I tried with the examples and I got the same.
You’re not doing anything wrong, it’s how the map does it. I’ll check to see if I can change something with how the map is created so that the link works as you expect, but I doubt it. Best bet is to create a link from Google Maps and add it underneath your map if you want a link to open in a larger map.