Model Target Guide View is opaque

Hi,EveryOne

     As you can see,The picture in the Android system is white,and not transparent on iOS

     I found that this is due to the dynamic loading assembly problem, because I started using the Model, target and activate the assembly in VuforiaConfiguration, Guide the view mode is set to Guide the view 2 d, Guide the image display is normal, but my project needs dynamic loading assemblies, what should I do?

Thanks