Environment:
Tumbleweed, rolling to snapshot 20170913-1.4 from previous one.

Description:

After upgrading, can not entered the gdm and Gnome-shell.

Switch to another tty, login and kill gdm, start Gnome manually with "startx".
The desktop was not shown, but the auto-started program launched. The window
manager seems not working on some functions (eg. maximum).

How to resolve:

Force remove package "gnome-shell" with breaking other packages. And manually
instal "gnome-shell" again. The new dependence "libmutter-1-0" with version
"3.26.0-1.1" will be automatically installed.

Reboot the system, now Gnome come back and everything restore to normal.

Additional:
zypper log will be attached.