totem volume control is empty in fullscreen mode

[themusicgod1]

In multiple videos of different filetypes, if I go into fullscreen mode, wiggle the mouse to get the control bar at the bottom, including the volume control button, and then click on the volume control button, I see a window pop up where there should be a volume control slider, about a quarter of the size of the volume control slider, but there's no volume control slider in it. It's just empty. I can unclick and make it disappear and click and it reappears -- but never with the slider in it.

I've attached a screenshot that shows this in progress -- note the little message bubble attached to the volume control icon -- that's all you get to control the volume.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: totem 3.10.1-1ubuntu6
ProcVersionSignature: Ubuntu 3.16.0-4.9-generic 3.16.0-rc5
Uname: Linux 3.16.0-4-generic x86_64
ApportVersion: 2.14.4-0ubuntu2
Architecture: amd64
CurrentDesktop: GNOME
Date: Sat Jul 19 16:11:59 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-07-09 (10 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Alpha amd64 (20140708)
SourcePackage: totem
UpgradeStatus: No upgrade log present (probably fresh install)

[themusicgod1 (themusicgod1)]

Still hidden on new hardware (nvidia geforce 710m / xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2) / Ubuntu 15.04 / totem 3.10.1-1ubuntu6 / larger screen but you can see the edge of the horizontal volume control underneath the video.