1. When I open a group, e.g. by double-clicking its name, and I've sorted headers by (say) subject, the headers usually aren't sorted by subject when the group window opens, despite having a couple of chances, as it seems to incrementally load contents. I can get it in order by clicking "subject" to reverse sort and then again to sort in ascending order, but this is clumsy. When it ends an operation, it needs to ensure that what it's displaying is consistent with the selected view options.
2. There are other thing that don't refresh the display as they should, e.g. "Mark All Old" doesn't appear to have any effect when used on a group window displaying headers, but when I close and reopen the window, the headers are marked old or aren't displayed depending on the "Hide Old" setting. At the least, the window should immediately display the headers using the "old" colors after "Mark All Old" is used.
3. In the group list, is there any way to display the number of "new" headers in parens next to the group names?