Host: Fedora 27, Gnome, Wayland, VirtualBox 5.2.8 r121009
Guest: Windows 10 x64 with guest tools
Windowed mode, and full screen works fine (except Win-key being caught by host and not vm, but that's a wayland issue). Not sure how Seamless mode is supposed to work (I've seen some say the guest desktop should be hidden, only apps shown), but I'd be happy with the window going fullscreen except for the top tool bar from the host, very much like it is in the attached screenshot. My problem is that the red parts are the host showing "though" while the rest is the guest. Any ideas for a fix?
https://i.imgur.com/wTISi2B.png