I know most of the templates for both PHPRetro and Havana are/were based on HoloCMS, I'm not 100% what revision HoloCMS was based around. I know HoloCMS is supposed to represent the 2007 homepage but Habbo was adding and changing so many things around that time that I think this change might have been overlooked and left the same and just reused over and over from the early 2007 version. The feature I'm taking about specifically is the friend dropdown menu/friend management. I stumbled upon this change when I was watching a video posted from the official Habbo AU team. They had the friend management dropdown menu listed as an update that happened in mid/late 2007 which added the follow friends function and then also added some separation between online friends and offline friends. The one that has been reused from HoloCMS only shows your friends list in a cluttered long lists which I do believe is official just from a way earlier version which was never properly revised in this unofficial software.
From Official Habbo AU Video:
From my Hotel / Havana [Using HoloCMS Web Templates]:
From Official Habbo AU Video:
From my Hotel / Havana [Using HoloCMS Web Templates]: