Zimbra desktop 7.2.2

Hello I wanted to point out some problems with Zimbra Desktop 7.2.2 in Windows:
- Using a shared address book the auto-complete is sometimes slow (3-4 seconds)
- If I use the Italian language, the contacts of shared address book are not in alphabetical order and the search tab by letters is not working. If I change language to english I see the addresses sorted correctly.

kindly you have any suggestions ?

Best regards