kmail icon attachment

Hi,
i'm using kde 4.14.2 with kmail 4.14.1 on debian jessie, i have a strange
feature, when i receive an e-mail with attachment it is displayed as unread
i the email list, when i read it, it's marked as read, but the attachment
icon (in status) become grey as if the email never had an attacchment.
I wonder if it is normal working or it is some my misconfiguration or some
bug....

Thanks for reading.

Best Regards


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