For one of my email modules the module thumbnail does not update. This causes alot of confusion between the clients because they cannot see the correct preview so therefore they don't select that module. However for the other modules where I haven't used toggle it works great and the previews are all correct so I am not sure if its something to do with the toggles.
If there is a workaround this then please help me out
I have attached some screenshots.
Capture - shows how it gets displayed.
Capture 2 - shows how it should get displayed.