Comment 0 for bug 1027364

If receiving a new message in Thunderbird, a small counter appears in the corner of the icon in the launcher. It disappears if the new message had been opened.
BUT: If receiving more than one messages in one time the counter only disappears if all the new messages had been opened. For example:
You receive 4 new messages : Counter is set 4
You open the first message : Counter is still 4
You open all the residual messages : Counter disappears