virtualbox.org

I've upgraded my host to macOS Mohave and now when I move the guest window running Windows 10, the contents of the window doesn't move.
for example, the frame of the window all the way to the left edge of the screen but the contents of the window remain in the middle of the screen

Known issue since 10.13 beta, see ticket #17168 and especially comment #5 which lists four potential workarounds:

• Minimize/Restore the VM window.
• Hide/Show the VM window.
• Menu Display » Adjust window size (HostKey+A).
• Disable 3D acceleration.

excellent, thanks!