The information we add into infoboxes is “attached” tot the actual marker (pin) when we create it.
This happens in mapfunctions.js file via function createMarker()
To center pin in the map must remove map.panBy from all highlighted places as displayed in the below screenshot, but this will apply for all locations of the map/infobox.
Explanations when you wish to center just the property page single pin.
When you click on a marker the infobox/picture appears. The map becomes centered on the marker position but since the picture is not opening, everything is a little off and not centered & visible. Because of that we “pan” the map so marker& image get centered and visible.
On the property page – after everything is loaded we simulate the click on the property marker. Because of that, you see the marker and image centered and visible.
If you don’t want to show the image for the property page we just have to remove the code that simulates the click. This code is on google_map_code_listings.js at line 108
Just remove the line form screenshot http://prntscr.com/gl19m9
Now, if you want to use minified version of the files you need to minify the google_map_code_listings.js file. You can use this tool https://jscompress.com/ and the end results should be a file named google_map_code_listing.min.js