This has been reported in another topic as well http://support.advancedcustomfields.com/forums/topic/google-map-copypaste/
Like I posted there, I’m not seeing this issue. However, I know that the developer as been doing some optimization of the JavaScript and there could be a conflict of some kind with another plugin.
Can you try deactivating other plugins. Also, if anyone can supply any information on any JavaScript errors that might be helpful.
