Subject: bug#15913: 24.3.50; regression: mouse-face does not stay on (turn-off due to tooltip?)

From: Eli Zaretskii <[email-masked]>
Date: Fri, 29 Nov 2013 17:29:04 +0200

> Date: Fri, 29 Nov 2013 07:06:09 -0800 (PST)
> From: Drew Adams <[email-masked]>
> Cc: [email-masked]
> 
> There is no mouseover problem in Emacs 24.3 or prior, but the flickering
> of the menu bar is there.  However, there is no such flickering with
> Emacs 20 at all.

The display engine got almost completely rewritten for Emacs 21.1.
Previous versions could assume that the menu bar doesn't need to
change too frequently, but later versions cannot.

> (I no longer have Emacs 21, so AFAICT the flickering problem starts
> with Emacs 22.)

I'm quite sure it's 21.1.