wingpanel popups are sometimes mis-aligned

[Ezra Sharp]

Sometimes the menu popups from indicators are mis-aligned or weirdly obscured.

I have a dual screen setup and sometimes the popups width extends over into the 2nd screen.

ProblemType: Bug
DistroRelease: elementary OS 0.2
Package: elementary-desktop 1.299-0~373~precise1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.5.0-28.48~precise1-generic 3.5.7.9
Uname: Linux 3.5.0-28-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.2+elementary3~precise1
Architecture: amd64
CrashDB: elementary_meta
Date: Wed May 8 00:34:20 2013
InstallationMedia: elementary OS 0.2 "Luna" - Beta 1 amd64 (20121114)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_NZ:en
 PATH=(custom, no user)
 LANG=en_NZ.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)