bug#7464: 24.0.50; mouse highlighting vanishes upon unsplitting window

[Eli Zaretskii]

> From: Stephen Berman <stephen.berman@gmx.net>
> Date: Mon, 22 Nov 2010 15:57:51 +0100
> Cc: 
> 
> 1. emacs -q
> 2. C-x 2
> 3. Put the mouse pointer over one of the links in the splash screen, so
> that the link becomes highlighted.
> 4. C-x 1
> => The highlighting from step 3 disappears, although the mouse pointer
> is still over the link.  If the cursor is moved onto the link, then the
> character under the cursor shows highlighting again, and moving the
> cursor within the link extends the highlighting.
> 
> This problem is reliably reproducible, also on earlier builds of Emacs
> 24 I have, but not on Emacs 23.1.91 (I don't have 23.2).

I can reproduce it on Windows in Emacs 23.2.90 and also in stock Emacs
23.2 and Emacs 23.1.  I don't have Emacs 23.1.90 anymore to test.