Unity 64bit in VirtualBox on Ubuntu - strange transparent rectangles while opening project

Hi there,

I've been a heavy user of the Linux builds and have already released a game with it. This was a new project. I now want to edit an existing quite large project but encounter a lot of strange errors and issues, so I want to try and use the Windows version for now inside virtualbox on Ubuntu.

I have had this visual error since the first time I tried but didn't bother to make a question about it after trying the official Linux version.

The weird part is that if I pause my VM the image is clearly visible. If I make a screenshot using virtualbox screenshot feature (right ctrl + e) I also get a clear image! See screenshots for details (the one I made without pause is made with print screen key so you can see the distortion happening).

I installed the 3D drivers and my VM has 3D acceleration turned on.

I was wondering if other people have this too. Thanks!