TeXdoc scope does not open results

The TeXdoc scope finds and lists results, and displays them with an icon (depending on the file type) and the file name. But when one clicks on a result, only the file name and the icon (in large) are shown, but no actions/buttons to open the file. This makes it impossible to actually access the result items.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: unity-scope-texdoc 0.1+13.10.20130723-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
Date: Fri Nov 1 17:52:09 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-07-20 (104 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: unity-scope-texdoc
UpgradeStatus: Upgraded to saucy on 2013-10-12 (19 days ago)