Redmine

The following just happened:

1. opened project
2. opened list of issues
3. set filter to show all with status "Resolved on Dev"
4. selected all issues, right clicked, batch set "% Done" to 100%
5. list reloaded, but in root, not in project, so all issues of all projects with the given status where listed, of course I didn't realize at the time...
6. selected all again and batch updated status to "Resolved on Test"
7. made some other developers a bit angry and had to restore yesterday's backup of our Redmine system

I have done this procedure before but never noticed this behaviour. Has anybody else noticed it? Is it a configuration problem? Our setup is pretty basic, though...

We are using:

Environment:
  Redmine version                          2.0.3.stable
  Ruby version                             1.8.7 (x86_64-linux)
  Rails version                            3.2.6
  Environment                              production
  Database adapter                         PostgreSQL
Redmine plugins:
  no plugin installed