Comment 5 for bug 1311393

I experience similar problem except reboot doesn't help.

$> uname -a
Linux pc-name 4.15.0-43-generic #46~16.04.1-Ubuntu SMP Fri Dec 7 13:31:08 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

$> df -h

udev 3,9G 0 3,9G 0% /dev
tmpfs 787M 9,5M 778M 2% /run
/dev/mapper/ubuntu--vg-root 226G 199G 16G 93% /
tmpfs 3,9G 71M 3,8G 2% /dev/shm
tmpfs 5,0M 4,0K 5,0M 1% /run/lock
tmpfs 3,9G 0 3,9G 0% /sys/fs/cgroup
/dev/nvme0n1p2 473M 121M 328M 27% /boot
/dev/nvme0n1p1 511M 3,5M 508M 1% /boot/efi
tmpfs 787M 36K 787M 1% /run/user/1000
/home/username/.Private 226G 199G 16G 93% /home/username

$> sudo du -h --max-depth=1 /home/
119G /home/username
119G /home/.ecryptfs
237G /home/