[MlMt] Mailbox jump-up on click

[Eric A. Meyer]

Hello all,

I've been having a strange problem with MailMate mailboxes.  When I try 
to click on the mailbox pane, sometimes the mailbox pane scrolls upward 
about a message; other times not.  This is hard to clearly explain, so I 
created some videos showing it not happening, and then happening.

<http://meyerweb.com/vid/2016/mailmate-stable.mov> -- this is now things 
should act, I believe.
<http://meyerweb.com/vid/2016/mailmate-jump.mov> -- note how the 
scrollbar moves when the mailbox pane is clicked; I am _not_ clicking 
and dragging there, and can trigger the behavior with either an external 
mouse (what i used in the video) or the touchpad.

The problem isn't 100% reproducible for me, but I was able to trigger it 
pretty consistently by turning Distortion Mode off and then back on.

Even without any Distortion Mode changes, it seems to happen whenever 
new messages have arrived in the mailbox, but I'm not sure that it 
happens every time.  And once I've seen the jump-up and then scrolled 
back down to the bottom, it doesn't seem to happen again until a new 
message comes in.  (If that is in fact the trigger.)

Anyone else seeing something similar?  Better still, know why it might 
be happening and how to prevent it?  This is in El Capitan, if that 
helps at all.


--
Eric A. Meyer - http://meyerweb.com/