Why is google maps not loading when moving the mouse?

Question

JavaScript

Greetings!
The output of google maps is connected, the map is displayed, but when moving the mouse to the sides, the continuation of the map is not loaded. Also, the zoom in and out icons are kind of smeared. Who faced, tell me where to dig. Here is the site htpp://goo.gl/vz2ED8, you need to click on search, select a product and already in the full description of the product there is a location tab. Thanks in advance for your help. I'm on my mobile so I can't post the code.