Difficult to say - I use virtualbox everyday - maintaining a backend developed for .net framework on IIS - I can tell - in my environment virtualbox is solid as rock.
pacman-mirrors -G
unstable
$ inxi -S
System:
Host: tiger Kernel: 5.18.3-1-MANJARO arch: x86_64 bits: 64
Desktop: KDE Plasma v: 5.24.5 Distro: Manjaro Linux
$ vboxmanage --version
6.1.34r150636
Just a thought - do you all have the extension pack installed - from AUR?
Not having the correct version - may cause unexpected issues.
Another thought
I don’t use the Manjaro precompiled host module (linuxXYY-virtualbox-host-modules) but instead I use the virtualbox-host-dkms and the headers for my kernel(s)