Windows 10 Guest Seamless Mode doesn't work

[Wisty]

I am running VB 5.0.1r102010 on a Windows 10 64 bit Host.

With a Windows 10 (32 bit) guest Seamless mode overlays the guest desktop on the host desktop - both taskbars appear at the bottom, and selecting a window from the host taskbar makes it appear on top of the guest desktop. The visible Icons on the guest desktop are fully functional. I can start apps from the host by using the Desktop>> list.

An identical (pre-upgrade) Windows 7 guest behaves correctly.

I note that someone has reported the same issue on an OSx host, so presumably it is an issue with the Windows 10 Guest, but I can't see a ticket on the subject.

[GianE]

I'm in the same situation with osx host and w10x64 guest.
Nice to see i'm not alone at least

[pkaplan]

...and the same problem here with a linux host and Win10 32-bit guest (but not a Win7 32-bit guest).

[TheMetalDog]

Same: Arch-Linux Host - Windows 10 Client

[noteirak]

I am running VB 5.0.1r102010

Update to 5.0.4, many improvements since. Same for all the others who said "same problem" of course.
Locking this since nobody bothered to provide the Minimum information needed for assistance.