I'm not sure if this is related to bug:835 or not, but the Watchers module is duplicating some users in the list on http://bootstrap-playground.wikidot.com. I'm also not sure if this is just an issue on Bootstrap enabled sites or not. I haven't noticed this on any other sites (but haven't really been looking for it either). I don't see this issue on the community site (non-Bootstrap). My other Bootstrap sites are closed or private and only have a couple of watchers. I could not recreate this on any of those sites.

The first duplicate on the list, RobOstapiuk, has been a member for over 4 years. The other duplicate watcher, 315P, is a member who just joined Wikidot 10 days ago.