Source: rt-extension-repeatticket Version: 1.11-1 Severity: important Tags: sid Forwarded: https://rt.cpan.org/Public/Bug/Display.html?id=133122
As mentioned in the upstream report, the styling is broken in RT5. There is an rt5 branch from upstream, so in the worst case, it may be possible to apply those changes if there's no upstream release by the time we want to upload RT5 to unstable (and drop RT4).