I am still experiencing this issue.
To me, it would appear that the Chrooted named directory is now associated with the /usr filesystem?
I am not exactly certain how this occurs, because in my mind, the chroot for named is /var/lib/named.
Here's some additional information on the matter.
[root@ns log]# mount
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
devtmpfs on /dev type devtmpfs (rw,nosuid,size=4147120k,nr_inodes=185975,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755)
/dev/sda1 on / type ext4 (rw,relatime,data=ordered)
/dev/sda6 on /usr type ext4 (rw,relatime,data=ordered)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=25,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
mqueue on /dev/mqueue type mqueue (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime,mode=755)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
/dev/sda7 on /var type ext4 (rw,relatime,data=ordered)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
/dev/sda8 on /tmp type ext4 (rw,relatime,data=ordered)
/dev/sda1 on /var/lib/named/etc/rndc.key type ext4 (ro,relatime,data=ordered)
/dev/sda1 on /var/lib/named/etc/named.iscdlv.key type ext4 (ro,relatime,data=ordered)
/dev/sda1 on /var/lib/named/etc/named.root.key type ext4 (ro,relatime,data=ordered)
/dev/sda6 on /var/lib/named/usr/lib/bind type ext4 (ro,relatime,data=ordered)
/dev/sda6 on /var/lib/named/usr/lib/openssl type ext4 (ro,relatime,data=ordered)
/dev/sda7 on /var/lib/named/var/named type ext4 (rw,relatime,data=ordered)
ns5.gigabit.ABS-CompTech.com:/sysadm on /sysadm type nfs (rw,nosuid,relatime,vers=3,rsize=8192,wsize=8192,namlen=255,soft,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.50.15,mountvers=3,mountport=57092,mountproto=udp,local_lock=none,addr=192.168.50.15)
ns5.gigabit.ABS-CompTech.com:/var/spool/mail on /mail/spool/mail type nfs (rw,nosuid,relatime,vers=3,rsize=8192,wsize=8192,namlen=255,soft,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.50.15,mountvers=3,mountport=57092,mountproto=udp,local_lock=none,addr=192.168.50.15)
ns5.gigabit.ABS-CompTech.com:/home on /home type nfs (rw,nosuid,relatime,vers=3,rsize=8192,wsize=8192,namlen=255,soft,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.50.15,mountvers=3,mountport=57092,mountproto=udp,local_lock=none,addr=192.168.50.15)
Thank you.