According to Xbox 360 users, after acquiring The Hidden Secrets their in-game money was wiped along with their main campaign progress; however side missions remained unaffected.
Other features also were left unmolested by the quirky bug. It seems, for now, that the Xbox 360 version of Assassin's Creed 3 is the only one being victimised.
December 4th saw the early release of The Hidden Secrets DLC for Season pass owners, which adds new missions, costumes for Connor and items to wield. December 11th sees the release of the new downloadable add-on available for everyone else. Luckily Ubisoft are "able to reproduce this issue at the studio and are working on a fix/workaround."
"From what we can tell, this problem seems to be rare and should generally only affect a very small number of players. That said, we're taking the speedy and complete resolution of this very seriously," announced .
The community developer reveals how to 'avoid the bug': "Do not load your saved AC3 game while the DLC is downloading in the background. This appears to be the key trigger for this bug. You can do anything else you want to do, just don't load up your saved game and play it while the DLC is downloading."
PS3 and PC gamers should be completely fine with The Hidden Secrets DLC. This bundle includes all the pre-order bonuses that were provided by various retailer outlets, adding in total around a hour's playtime.