After suspending, shift key is stuck down

[Derek]

When using the sticky keys accessibility feature and returning from suspend, the right shift key is logically "stuck". Note that I do not use the right shift key, so it must be switching states on suspend/resume.

Entering a password will fail, and through trial and error I found it is the right shift key. Pressing this key "resets" the feature and allows entering of a password normally.

This problem doesn't occur on my computer when the sticky key feature is off.

This problem did not occur before release 14.04, so I assume it has to do with the new "unified" log in screen that replaced the prior screen on resuming from standby.

Other relevant info: Dell XPS 9333
Description: Ubuntu 14.04 LTS
Release: 14.04
lightdm:
  Installed: 1.10.0-0ubuntu3

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lightdm 1.10.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Apr 23 07:23:06 2014
InstallationDate: Installed on 2014-04-17 (5 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
LightdmConfig:
 [SeatDefaults]
 user-session=ubuntu
 greeter-session=unity-greeter
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.init.lightdm.conf: 2014-04-17T19:18:51.313854