A while ago I switched my FreeBSD desktop to the new xorg 1.12.X. In ports this requires adding WITH_NEW_XORG=yes to /etc/make.conf.

I only found out today that for packages you need to add a file called /etc/pkg/FreeBSD-new-xorg.conf containing:

FreeBSD_new_xorg: {
 url: "pkg+http://pkg.FreeBSD.org/${ABI}/new_xorg",
 mirror_type: "srv",
 signature_type: "fingerprints",
 fingerprints: "/usr/share/keys/pkg",
 enabled: yes
 }

Re-installing everything to see if it is more stable