Ordering by name or by lastname not work

[Rafael PampaVilca]

When I select a group and see its members,
The ordering that works perfectly is by username,
does not work by name or by lastname.

[Douglas Cerna (replaceafill)]

Hello Rafael.

Two quick questions:

1. Is this version 2.6 or 2.8?
2. Could you check that the last name/first name values for people don't have leading spaces using the person edit form?

Thanks.

[Rafael PampaVilca (rafopm)]

Hello Douglas

1. Version 2.6.4
2. Not have spaces.

In addition to this, the other error that occurs is:
when I perform a search for people, not search by name or by lastname, working properly by username.
I report as a new bug?

thank you very much