filenames get their accented letters replaced by "??" when zipped

[Thibault D]

1. Right-click > New Document > Empty Document
2. Name it "tést"
3. Right-click on it > Compress...
4. Select the extension ".zip" > hit "Create"
5. "Tést.zip" created successfully > hit "Open the archive"

Observe that the file in the archive is named "T??st" instead of "Tést".

Note : this does not happen if the archive is created with the "tar.gz" default extension.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: file-roller 3.6.3-1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-12.21-generic 3.8.2
Uname: Linux 3.8.0-12-generic i686
ApportVersion: 2.9.1-0ubuntu1
Architecture: i386
CasperVersion: 1.330
Date: Sat Mar 16 16:15:53 2013
LiveMediaBuild: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130316)
MarkForUpload: True
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: file-roller
UpgradeStatus: No upgrade log present (probably fresh install)