Just upgraded to Precise and can confirm that the bug doesn't seem to be fixed - or isn't related to gnome-documents. Recent Documents don't show up in the Gnome Search, neither in LibreOffice.
Ubuntu 12.04 gnome-documents 0.4.1-1 gnome-shell 3.4.1-0ubuntu2
Just upgraded to Precise and can confirm that the bug doesn't seem to be fixed - or isn't related to gnome-documents. Recent Documents don't show up in the Gnome Search, neither in LibreOffice.
Ubuntu 12.04
gnome-documents 0.4.1-1
gnome-shell 3.4.1-0ubuntu2