There are a number of customisations to php files, and we use a custom theme (https://github.com/digital-york/Borthwick-Catalogue-CSS-theme
). However, my feeling is that this problem is unrelated to any of the customisations, because the modifications are only to files that shouldn't have effect on what's displayed in the body of the Description Updates page. I could be wrong though.
I will list the customised files anyway:
If any of the above files stand out as likely to be involved, I'd be happy to diff them with the official ones to see if our customisations are the cause. Also, I turned off the stylesheet in my browser and the problem was still apparent, so I'd presume this means the custom theme is not the cause.
In terms of the installation process, it broadly adheres to the official installation instructions, though all of the work is done by Puppet.