Oracle has released VirtualBox 5.2 Maintenance Release 4.
This release includes improvements and regression fixes for Oracle VM VirtualBox 5.2. Between them we can mention:
User interface: Adjusting desktop file for X11 window managers and various high resolution display adjustments
Audio: fixed SB16 volume handling and various fixes
Linux hosts: fixed screen corruption when the host screen changes and a virtual machine window is maximized
X11 Guest Additions: fixed a hang at the GNOME Shell login screen with 3D enabled
The Oracle VirtualBox Team