Problem using XDMCP in Gnome openSUSE 42.1

Can not run remote X apps in gnome (kde works fine). Tryed everything. Used to work perfectly in 13.2.

ports in FW are opened.
set next in /etc/sysconfig:

DISPLAYMANAGER_REMOTE_ACCESS = yes
DISPLAYMANAGER_START_XSERVER = yes
DISPLAYMANAGER_XSERVER_TCP_PORT_6000_OPEN = yes

/etc/gdm/custom.conf
[security]
DisallowTCP=false

[xdmcp]
Enable=true
DisplayPerHost=10
HonorIndirect=true