I have embedded the regarding Account Form on Emails using an IFrame. 

For some reason, when the Account Record is displayed within the IFrame, Bing Maps loses its formatting and masks a number of fields/grids/panes on the Form. 

Unfortunately I've had to cover most of the below; however, the central black pane is the Activity Pane, the subgrid to the right is child Contacts, and a number of fields to the bottom left are layered on top of the map. 

On the Account Form, when opening manually through the UI, the Map is formatted as out of the box. 

It seems this issue occurs in both Chrome and IE, but not Firefox. Does anyone know why this occurs, or how this issue can be tamed within an IFrame?