I am having the same issue on a fresh install.
I have checked space and it is all fine. See below. I have also changed to the default theme and I do not see this issue.
[email protected] [~]# df –si
Filesystem Size Used Avail Use% Mounted on
/dev/xvda3 92G 19G 73G 20% /
devtmpfs 4.1G 0 4.1G 0% /dev
tmpfs 4.0G 0 4.0G 0% /dev/shm
tmpfs 4.0G 396M 3.6G 10% /run
tmpfs 4.0G 0 4.0G 0% /sys/fs/cgroup
/dev/xvdb1 859G 168G 690G 20% /home/users
/dev/xvda1 475M 136M 315M 31% /boot
/dev/sda1 2.2T 690G 1.4T 35% /backup
/dev/sdb1 2.2T 5.3G 2.1T 1% /backup2