I have massage_cache turned on. I created and account and shared its mailbox readonly with some other users. When logged-in as one of those users, i try to delete messages in the mailbox without success, nice. 

However when i login as the mailbox owner, roundcube displays no messages. turn off message_cache and roundcube displays the messages.

I also had imap_cache set to apc all the while. 

Thanks.

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