Oracle has released VirtualBox 6.1 Maintenance Release 8.
Oracle VM VirtualBox 6.1.8 release includes improvements and regression fixes for Oracle VM VirtualBox 6.1.
Notable bug fixes are:
Fix several layout and mouse position handling bugs with soft keyboard
Fixed crash on last VM removed
Restored 'VBoxClient--checkhostversion' functionality
Fixed resizing and multi monitor handling for X11 guests
Build problems fix with Oracle Linux 8.2 (Red Hat compatible kernel) / Red Hat Enterprise Linux 8.2 / CentOS 8.2
Various stability improvements
The Oracle VirtualBox Team