Attribute not sorted alphabetically for multiple entries

I receive a new laptop and I have upgrade to the latest version.
On my previous laptop all was working fine (Version 2.0.0.v20130628)

I have some group with memberUid with a higher number of 10.
When I extend the view, in my old configuration, all the user are sorted with alphabetic order.

If I browse the same ldap tree on my new pc, they are all mixed.
I try all sort of sorting but each time i got the same result, unable to have a good sorting. It seems that the ordering only sort the main value and not if they are within the same group (memberuid).

Please check the screenshot on attach.

Thanks in advance.

steve Balon