Badge in message list header row disappears

[pompfe]

In larry skin the badge in the column of the header line disappears.
When doing a refresh in message list at first the badge appears. Then at the very end of drawing the message list the header row shortly moves right and then left again and then it does not show the badge anymore but it shows "[a". I expanded the column width and then it shows "[authres_status]" overlayed by the centered badge. When resizing to 20px it does not show the badge anymore but only the "[a".