Your comments

In the old version bugtracker I could manage internal people from the project.

it is very uncomfortably. I have to add all internal people (about 50 users) in project but i need only in 5 people. Furthermore I have to spent time on choose whom I want to assign an error. each time creating new bug http://screencast.com/t/5D1zIejeUFr

I have the same problem too. Yesterday it worked. Please correct this as soon as possible, as there is no possibility to invite new people into the system.