Hi,
funny, I am facing similar issues right now, IOS perfect, Unity Perfect, Android-> bug...
I am not sure what is going on exactly on your end, nor on mine, but I suspect that internally memory or screen buffer is handled differently on android and it creates a different experience.
Does android get out of the drakscreen eventually? or is it stuck? if it's stuck it's a bug in your logic, but if it goes away, it's likely the scene loading process itself.
Bye,
Jean