That makes things worse! Am I supposed to not use the System Monitor at all and count that as an improvement? I believe the System Monitor applet is somewhat part of the official extensions - ie it is in the gnome-shell-extensions package.
This is one of many little niggles that add up to an unpleasant experience. Another example is whether additional workspaces go horizontally or vertically.
AFAIK, there are no official extensions. The gnome-shell-extensions package is just a collection of extensions which grew together in a development repo before the extensions website (http://extensions.gnome.org) existed.
From the website:
> Since extensions are created outside of the normal GNOME design and development process, they are supported by their authors, rather than by the GNOME community. Some features first implemented as extensions might find their way into future versions of GNOME.
I don't actually want a choice! When I use Gnome 2 or Gnome 3 fallback mode, there is exactly one system monitor and it works. The extensions site lists 3 named system monitor and 3 pages of search results with similar descriptions. And my prior experience has been every extension breaks on Gnome version change. And usually they don't end updated so I have to go find another set of extensions.
I am one of those (apparently few) people who actually agree with the Gnome approach of less configurability and options. (Right up until one I use is removed of course!) As standard I do not need a large choice of system monitors, workspace managers, window switchers, volume menus etc. I need one good official one, that works out of the box and is still present as Gnome does its biannual update.