Inconsistency: GTK+ does not open elements with one click whereas set so in Nautilus

[Agmenor]

I set up Nautilus to open files and folders with one click only instead of two.
I did the following: Open Nautilus, Edit menu, Preferences, Behaviour tab, select Open elements with one click.
But when I use GTK+, this behaviour is not respected. For example the selection of a destination folder in a 'Save as…' dialogue window is made using two-clicks to open.

This bug has been triaged a long time ago on GNOME Bugzilla (https://bugzilla.gnome.org/show_bug.cgi?id=121113) and patches have apparently been submitted. I am not technical enough to understand why nobody made the required merges, but I hope someone in Ubuntu will dare doing it.
I suppose the age of the bug is the only reason which could forbid me to assign it to the One Hundred Papercuts team.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: nautilus 1:3.2.1-0ubuntu3.1
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Uname: Linux 3.0.0-13-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Sat Dec 3 18:06:26 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
SourcePackage: nautilus
UpgradeStatus: Upgraded to oneiric on 2011-09-26 (68 days ago)