'Refresh' button is broken

'Refresh' button is broken

Dear developers
It seems that the 'Refresh' button is broken.

I'm currently experimenting with Zoho Mail accessed with Opera Mail through IMAP and I notice this strange behaviour: 
- in Zoho Mail I switch to Inbox
- in Opera Mail, I mark as unread a message from Inbox
- in Zoho Mail:
-- I click Refresh (while still being in Inbox), but there is no notification of the unread message
-- I switch to Spam 
-- I switch back to Inbox and only then does Zoho notify me of an unread message

Is this a known issue? Regards
Liviu

liv@liv-laptop:~$ uname -a
Linux liv-laptop 2.6.32-27-generic #49-Ubuntu SMP Thu Dec 2 00:51:09 UTC 2010 x86_64 GNU/Linux



About Opera
Version information
Version
11.00

Build
1156

Platform
Linux

System
x86_64, 2.6.32-27-generic

Browser identification

Opera/9.80 (X11; Linux x86_64; U; en) Presto/2.7.62 Version/11.00