I am using Ubuntu 18.04 as a guest system, virtualized by the latest version of VirtualBox.
My host OS is Windows 10, which is up to date.
The Ubuntu guest is a fresh install, and it is also up to date. I installed the VirtualBox guest additions tools because the UI was sluggish and unresponsive.
Now, even though the responsiveness has improved, there is some serious bug / glitch in the UI, which constantly appears and disappears.
Here are some screenshots:
The menu bar of every program is also glitched, but i was not able to capture a screenshot because when doing so, the menu bar loses the focus and the glitch dissapears.
It appears to be somehow related to focus or highlighting features of GNOME, since it also happens in the startup menu when hovering over the different options.
Any idea on how to fix this? I've searched multiple threads but could not quite find this problem elsewhere.