Strange behaviour with Maps on Android

In my app I have 2 screens that have maps on. Screen A has Map A and Screen B has Map B.

When I show Screen A, Map A show perfectly and I can use it accordingly. But when I push Screen B, Map B has an overlay of Map A that was on the previous screen. This appears to just be an image and the user cannot interact with it.

Map A and Map B are seperate instances of the Map class.