谷歌地图API - 奇怪的地图“抵消”行为

I'm adding a map next to a form on my web page. The idea is that people can sign up, and when they type in their address and click search, it place-marks their house, they must do this before they submit the form (geolocation has a large role on my site).I'm adding a map next to a form on my web page.