search does not work correctly in Kate's vi mode

Search does not work correctly when using vi mode in Kate, using the standard Kate package in Kubuntu (version 3.8.5) from 4:4.8.5-0ubuntu0.1 (precise-updates). Once a search has been initiated using '/', the 'n' or 'N' commands should proceed to the next or previous occurrence, however these keys have no effect. I have ticked the following options under 'Vi Input Mode' from the Kate configuration dialog: 'Use Vi input mode', 'Let VI commands override Kate shortcuts', 'Hide the Vi mode status bar'.

 I have reproduced this on two different machines with Kubuntu 12.04 LTS. I can fix the problem by compiling Kate from source. The problem appears to be resolved in Kubuntu 13.04.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: kate 4:4.8.5-0ubuntu0.1
ProcVersionSignature: Ubuntu 3.2.0-40.64-generic 3.2.40
Uname: Linux 3.2.0-40-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.2
Architecture: amd64
Date: Tue May 7 11:48:47 2013
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
MarkForUpload: True
SourcePackage: kate
UpgradeStatus: No upgrade log present (probably fresh install)