I have a problem when updating Name in CB 2.0.10/J! 3.4.3

In Configuration, I have set Name Style to Single Name Field.
That is also the way I want names displayed in User Lists.
But I want User Lists sorted on Last Name.

Problem:
When editing and saving user´s lastname in the profile, the field Lastname is not updated accordinglu. The old lastname is kept in Lastname field which obviously makes name sort in wrong order.

I cannot remember I had this problem in CB 1.9.1?

Maybe I explained my problem unclear.
I dont know if I understand your answer...

If a user Changes his Name from "John Doe" to "John Ross",
the field Lastname stays "Doe" and does not change to "Ross".
And in my example, he is still sorted under "D" in User Lists.

I have run all tests, none of them helped.

This means, when CB is configured to use Name Style as Single Name field, and a user changes their name, the CB field 'name' is updated, but not the field 'lastname' (same with 'firstname' and 'middlename')

Using Single Name is very convenient to use to make the whole name show on ONE line in User Lists.
However, sorting on Lastname in User Lists is also good practice.

Do you see my Point?

Thanks!

BTW, where is the proper place to post feature requests/wishes for CB 2.0.x?