Fixing mouse issues with VirtualBox

Sharing this just in case if you get this issue when test-driving OSes with Virtualbox (my favorite choice in trying out new Linux distros and OpenBSD): how to restore the mouse on the guest in VirtualBox

Happened to me and freaked me out for a moment. Turns out that the solution, like the previous issue of maximizing the screen, is much more low-tech than it seems. No fiddling with config or command-line options, just go to "System," "Motherboard" and change the Pointing device from Tablet to PS/2 Mouse. Reboot the guest and voila.

But why the fuck was this switched to Tablet mode as a default in first place? It doesn't even make sense however you look at it. PC emulates PC, guys...