Nautilus Search Box Right-Click "shadow" Remains

[mwSMH9T]

Right-Clicking with the mouse pointer within the Nautilus search box intermittently produces an empty shadow of the box (No Text: Cut Copy Paste Delete | Select All). The empty box appears within a minority of the attempts. Once the empty shadowbox appears, it persists MOST of the time, but not always. The remaining box acts as a "dead-zone" for future mouse pointer actions.

My impression is that the pop-up process only partially completes, leaving the box waiting for an input that can never happen. Attempts to left click within the empty shadow box--as if the text was merely background color--produce no responses.

This bug can be repeated only intermittently, with no identifiable periodicity. If text does populate the box, then it functions correctly and closes. If the text does not appear, then it may or may not close. This behavior is repeatable regardless of mouse pointer placement within the search box: right, left, or middle.

Repeated invocations of the bug result in an accumulation of the shadow boxes, positioned relative to the mouse pointer as with normal functioning nautilus window. In other words, moving the pointer across the single line search box allows shadow box placement across the horizontal and moving the Nautilus window up or down allows shadow box placement across the vertical.

The Screenshot app can capture the desktop image of the box(es).

Rebooting is the only solution that I have found.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nautilus 1:3.10.1-0ubuntu9.11
ProcVersionSignature: Ubuntu 3.13.0-65.106-generic 3.13.11-ckt26
Uname: Linux 3.13.0-65-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Sep 13 09:38:45 2016
ExecutablePath: /usr/bin/nautilus
GsettingsChanges:
 b'org.gnome.nautilus.list-view' b'default-visible-columns' b"['name', 'date_modified', 'type', 'size']"
 b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'date_modified', 'type', 'size', 'date_accessed', 'owner', 'group', 'permissions', 'mime_type', 'where']"
InstallationDate: Installed on 2014-09-01 (742 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)