Mail not display in all folders when move mail.

[hieuvk]

Hi all,
I have a error on Webmail Roundcube version 0.3.1. When I move or delete mail to other folder. And then I check mail on this folder but i don't see any mail.
Ex: I move a email from folder Send to folder: Inbox. And I check again in Inbox, it's not display on Inbox. Or when I trash a email and I don't see this mail in Trash.
Any everybody can help for me?
Thanks.