visual glitch of lines repeating after ansi-term run in split window

[themusicgod1]

1) open emacs with new large text file 'foo'
2) M-x split-window
3) M-x ansi-term in the second half of the window,
4) invoke 'man man' in the term window half
5) edit a long line or two in the remaining half
6) notice every the line above it is repeated from top to bottom, where the other lines of your file are.

these extra lines persist after other edits are made, but not if the line they are on is highlighted, or if the line they are on is edited.

C-x 1 clears them.

screenshot blank lines actually have 'urls' under them.

Ubuntu 14.04

[4][Wed May 7 10:36:18 2014][/home/themusicgod1]apt-cache policy emacs24
apt-cache policy emacs24
emacs24:
  Installed: 24.3+1-2ubuntu1
  Candidate: 24.3+1-2ubuntu1
  Version table:
 *** 24.3+1-2ubuntu1 0
        500 http://ca.archive.ubuntu.com/ubuntu/ trusty/main i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: emacs24 24.3+1-2ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3
Architecture: i386
CurrentDesktop: Unity
Date: Wed May 7 10:26:08 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-03-28 (40 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta i386 (20140326)
SourcePackage: emacs24
UpgradeStatus: No upgrade log present (probably fresh install)

[themusicgod1 (themusicgod1)]

May be related to https://bugs.launchpad.net/ubuntu/+source/emacs24/+bug/1077639 / unity

[themusicgod1 (themusicgod1)]

Can no longer reproduce