Comment 5 for bug 1848919

Yes, it is mounted:

ubuntu@bionicvm:~$ mount | grep Private
/home/ubuntu/.Private on /home/ubuntu/Private type ecryptfs (rw,nosuid,nodev,relatime,ecryptfs_fnek_sig=11d8701311f9dc77,ecryptfs_sig=4ca5cd476d88b7cd,ecryptfs_cipher=aes,ecryptfs_key_bytes=16,ecryptfs_unlink_sigs)