Entire mplayer window doesn't respond to mouse clicks after pressing ctrl

This bug was originally reported in 2012 on the Gnome Bugzilla
https://bugzilla.gnome.org/show_bug.cgi?id=669773

To reproduce, press and release the Ctrl key and click on the close button on the MPlayer window.
The console output says "No bind found for key 'CTRL-CLOSE_WIN'.", so MPlayer somehow doesn't realize the Ctrl key was released.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: mplayer 2:1.1+dfsg1-0ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-48.80-generic 3.13.11-ckt16
Uname: Linux 3.13.0-48-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Apr 4 16:22:48 2015
InstallationDate: Installed on 2014-04-10 (358 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140410)
SourcePackage: mplayer
UpgradeStatus: Upgraded to trusty on 2015-02-27 (35 days ago)