Redmine

AFAIK, the statuses, trackers and roles are global, application wide objects. You define as many of them as you need. Then you define workflows (allowed transitions between statuses assigned to Role/tracker pairs). After that you choose which trackers to associate with particular projects.

That was my understanding also. But it seems I misconfigured the wotkflows, as I would like to have only some statuses visibles on some trackers. Thanks anymwy.

There is a checkbox to tell Redmine to show used statuses only.

Yes I know, the only thing is that I can't remove some statuses that I don't want to use. Thank you for your answer.

Do I understand correctly:
A user with role A can see statuses in the dropdown box in a tracker item, but you configured the workflow for role A and the tracker so this particular role can never use said statuses?

In 1.4.3 this is not the case, what version do you use?

Something like that but I could make an error on roles and trackers (I am using 2.1.0). I will check again the involved roles and see what am I doing wrong.
Thank you all.