Comment # 43 on bug 567324 from Carlos Robinson

Checking Leap 42.3. New install based on XFCE under vmware player.
There is a .i18n initial file on {HOME}, and it certainly is applied when using
XFCE.

I will now install Gnome (base system pattern) and check.
[...]

Yes, Gnome also imports the settings.

Wonderful! :-)

I will close as solved.