Help! Multi-display broken with latest updates

[Paul Smith]

On Tue, 2014-05-27 at 10:21 -0400, Paul Smith wrote:
> But no joy!  Both my monitors are displayed there, and one is
> selected.  But, I cannot select the other one (no matter how I click
> on it nothing happens and it is not selected), and I cannot move
> either of them (no matter how I drag either of them nothing happens).

Hah!  I found out that if you put your mouse over just a pixel or two
around the border of the square representing the monitor then you can
select it and move it.

That's pretty unintuitive: why can't I select and move it by clicking
anywhere in the square?

Also, I don't know why Gnome keeps forgetting my display preferences
when I log out and back in.

But, at least I am able to work again...