Hibernate Enabled but not working in Win10 Windows to Go

[OrangeMountain]

I have Windows 10 Home installed and activated (as Windows to Go) on an external Samsung T1 SSD. I enabled hibernation, however, every time I attempt to hibernate, the screen goes black but the PC never powers off and Windows never successfully hibernates. Any ideas what the problem could be? (Hibernation works perfectly on the Windows 7 installation on the internal SSD.)

System: Dell Latitude E6530, Core i5-3210M, 4GB RAM

Thanks!