Custom Google Map Type not showing map type control options on android HTC Thunderbolt

I'm writing an application that uses custom map types and you can choose which map to show from 开发者_开发技巧a drop down control over the map. Everything is working fine on iPhones and my LG android. I'm having problems on my friend and his wife's HTC Thunderbolts. On the thunderbolt, instead of the drop down showing my mapTypeIds list, it is only showing two options, Satellite and Map. They have the exact same problem on both phones.

The app is a jQuery mobile application. Here is how I'm accessing the API if that might have anything to do with it

<script src="http://maps.google.com/maps/api/js?sensor=false" type="text/javascript"></script>

I'm also using this jQuery plugin to make it easier to insert the map into my application.