Share Clipboard and Drag'n'Drop between VirtualBox guest Linux and host Windows

In VirtualBox, with Addition CD Image installed (refer to the post "Install Ubuntu 15.10 on Windows 10/VirtualBox"), you can enable the feature of Shared Clipboard and Drop'n'Dop to copy/cut text between host and guest..

In my case:
Host on Windows 10.
Guest running Ubuntu 15.10.

I can use both clipboard and Drag'n'Dop from host Windows 10 to guest Ubuntu, clipboard from guest Ubuntu to host Windows. BUT NOT Drag'n'Drop from guest Ubuntu to host Windows, it make the guest Ubuntu hang-up!