ddd + multiple monitors = confusing location of right click windows

[themusicgod1]

Steps to reproduce

1) Start ddd

2) Plug in another monitor

3) Right click somewhere in ddd. A popup window opens up...but where and why? Not on the right monitor, that's for sure.

xserver-xorg-video-nouveau:
  Installed: 1:1.0.11-1ubuntu2
  Candidate: 1:1.0.11-1ubuntu2
xorg:
  Installed: 1:7.7+7ubuntu2
  Candidate: 1:7.7+7ubuntu2
ddd:
  Installed: 1:3.3.12-5
  Candidate: 1:3.3.12-5
Ubuntu 15.04
Linux Hedy 3.18.0-13-generic #14-Ubuntu SMP Fri Feb 6 09:55:14 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ddd 1:3.3.12-5
ProcVersionSignature: Ubuntu 3.18.0-13.14-generic 3.18.5
Uname: Linux 3.18.0-13-generic x86_64
ApportVersion: 2.16.1-0ubuntu2
Architecture: amd64
CurrentDesktop: GNOME
Date: Sun Feb 15 23:05:39 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-07-09 (221 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Alpha amd64 (20140708)
SourcePackage: ddd
UpgradeStatus: No upgrade log present (probably fresh install)