Symptoms observed with PC-BSD 11.0-CURRENTOCT2015 and PC-BSD 11.0-CURRENTNOV2015, I'm advised to report the bug in the FreeBSD area. Most recently observed with KDE. The first observation might have been with Lumina. Select two or more items, choose 'New Folder with Selection'. Result: * creation of the 'Untitled Folder' directory * a crash of Files -- and maybe not all files are moved to the new directory (in the most recent incident, for me, two of three were not moved).
Not reproducible with Files 3.18.5 on TrueOS Desktop. I guess that a fix was made. $ freebsd-version ; uname -a 12.0-CURRENT FreeBSD momh167-gjp4-hpelitebook850g2-trueos.university.brighton.ac.uk 12.0-CURRENT FreeBSD 12.0-CURRENT #12 8b8c812(drm-next-4.7): Wed Oct 5 19:36:49 UTC 2016 root@gauntlet:/usr/obj/usr/src/sys/GENERIC amd64 $