If you have the issue shown below, this got fixed for me with a new update on the component and plugin that was released on Jan 20, 2015!
I have a site I updated to Joomla 3.3.6 and when I go to my location link where I have a Zh GoogleMap setup, I get an incomplete map on desktop and laptops which is similar to what we are getting on the Joomla 2.5.28 site. I've tested in Firefox, Chrome, IE and Opera. All show the same incomplete map. It works fine on mobile tablets and smart phones.
Looks like this:
Any idea what is happening?