+1
I am facing same issue. If there is any work around this, please let us know. This also happens with wordpress 4.0
Thanks.
Figured out the issue. Added this to nginx.conf under server.
location ~ /help/.* {
root /web/admin;
index index.php index.cgi index.pl index.html index.xhtml index.htm index.shtml;
try_files $uri $uri/ /index.php?$uri; #this line does it.
}