Message "You can now unplug {partition name}" When Unmounting internall HDD partition

In Nautilus (or "Files", or whatever it's actually called), whenever I unmount a partition by clicking the eject icon a message appears saying "You can now unplug {partition name}".

This is fine if the entire partition is an external drive, but for internal drives still appearing in the window and still listed in lsblk (also externals with other mounted partitions) this could mislead someone to attempt to unplug a drive that is unsafe to remove. Also, if there is more than one partition in a drive and some are still mounted, you shouldn't get that message saying you can now unplug the one partition you unmounted while the other partitions are mounted and drive is unsafe to unplug.

Ubuntu 16.04

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nautilus 1:3.18.4.is.3.14.3-0ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jul 24 21:18:53 2016
InstallationDate: Installed on 2016-06-24 (30 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)