Comment 6 for bug 1056788

The PublicOrPrivateTeamsExistence class does think it is checking that the user's teams intersect with the subteam's super teams.
            # Do comparison by ids because they may be needed for comparison
            # to membership.team.ids later.
            user_teams = [
                team.id for team in user.person.teams_participated_in]
            super_teams = [team.id for team in self.obj.super_teams]
            intersection_teams = set(user_teams) & set(super_teams)
            if len(intersection_teams) > 0:
                return True

In Loïc's case, I can see ~linaro-internal-wiki-access listed at https://launchpad.net/~lool/+participation. I can see ~linaro-internal-wiki-access listed in the "Subteam of" of every private team listed on members.

Loïc, can you visit https://launchpad.net/~linaro-internal-wiki-access/+members and copy the OOPS id shown in the Forbidden page? I need to see what is Lp is doing just before the error is raised.