Not seeing mandatory groups in user registration

Did you configure it in terms of picking the mandatory group?

I have a similar problem; I set "none" for mandatory group and checked "Require new users to join at least one group in addition to any mandatory group" which in my understanding should force him to select one.

Now, only one of three open, available groups shows up, and I wonder how to make them all available for selection.

You need to provide more information - esp what version of OG you are using.

I realize that this is an ancient issue, but I am cleaning up the issue queue. Are you still having this problem with the most recent version of the code? Is this still an issue for you at all?