This does definitely not "remove the problem" here.
As said before, installing all guest additions makes the ubuntu guest run X11 instead of wayland, it then just looks as if the problem had gone. This might help in terms of usability, but not if you want to use and test wayland (e.g. to prepare for 18.04) .
This does definitely not "remove the problem" here.
As said before, installing all guest additions makes the ubuntu guest run X11 instead of wayland, it then just looks as if the problem had gone. This might help in terms of usability, but not if you want to use and test wayland (e.g. to prepare for 18.04) .