When I "create a document" from the context menu
in Nautilus, Nautilus creates the file with:

- the wrong chmod: it does not enforce my user's
umask and instead uses what seems to be a default
value (chmod 600)
- the wrong group ownership : if I create a file
in a directory that has the gid sticky bit set
(with "chmod g+s"), the file does not inherit the
directory's group as it should. Instead it gets
associated to the user's default group.

Please take note that the "create directory"
function does not have this bug: it enforces both
my umask settings and the gid sticky bit.