Do not report the real problem when failing to create a user

[kobliha]

After defining the First User (well, rather a special one) , the Users summary page still says "No user defined yet".

But when I surf to the Overview page, the Install button is there and there is no error there.
After pushing it, it really starts installing ...

[kobliha]

Fine, so after talking with @imobachgs I can confirm, that defining the root password only is enough for making the Summary happy. I can install after that. The problem might be the single-letter username.

[imobachgs]

The bug is that you did not get a proper error when you tried to create the user. In this case, Agama uses YaST internals and the same rules apply: "The username must be between 2 and 32 characters in length".