Emacs highlighted region expanding with scrollbar movement

[Raimund Steger]

Hi,

I've only recently upgraded to Emacs 24 (GNU Emacs 24.3.1 
(i386-pc-solaris2.11, Motif Version 2.1.0)). Before, I used Emacs 22 for 
the most part, but also Emacs 23 (briefly) in some environments.

I noticed that apparently starting with Emacs 23, the highlighted region 
behaves differently when dragging the scrollbar handle with the mouse. 
As the highlighted region moves out of the visible area of the window, 
the highlighting is suddenly expanded to follow the point. This means it 
is not possible anymore to leave something highlighted and pan around in 
the file at the same time.

I have transient-mark-mode turned off, but changing its value does not 
change the described behavior. Also, it is reproducible with 'emacs -Q' 
and seems to happen for GTK builds as well.

Is there some way to turn this off? Or am I missing something here?

Thanks a lot,
Raimund