[MlMt] position in mailbox

[Eric Sharakan]

Hi, recently I'm noticing that when I select a new mailbox to view, I'm 
often left with the oldest messages visible in the summary pane.  
Sometimes I'm left somewhere in the middle of the list of messages.

What I prefer (and what I'm pretty sure used to be the case), is that 
the newest messages are in view whenever I select a mailbox.  This only 
seems to be an issue if there are no unread messages in the mailbox.


This is on Mojave 10.14.5, running MM r5635 (though I think I started 
seeing this in a previous build), using the Thread Arcs layout.

Thanks.

-Eric