As a user, I do not want to worry about using case to have my values show.
Adding a role, I created "test" and thought it was not appearing. After evaluating, I found that it sorted below the default ones provided in Nexus. I changed it to "Test" and found it sorted in.
This is a bug rather than an improvement type because in NX2, the sort is case insensitive.
I did not see any tickets indicating this was intentional or a known issue.