Comment 8 for bug 205144

Here too, empty groups are added. What is even more interesting: When you add a group, it proposes you GID 1001. When you then click ok and check the properties of the new non-named group, it has GID 1002. When you add another group, it tries to give GID 1002 and ends up with 1003 and so on.

But it doesn't freeze, I can just close users-admin and when I start it again I can play the same game from square 1.