Timesheet bug issue

i'm having a problem on Zoho project, I'm trying to log time for me and my colleagues in the "list view" mode.
Every time I try to log time for my colleague (user : j.masse@momac.net) it's registered in my timesheet...

The Problem is a little bit diferrent when I don't use the list view mode but the data is not displayed correctly in the caledar.

Do you have any fix for it ?

Thanks,

Paul

ph.bedry