Comment # 8 on bug 1106522 from QK ZHU

There are two commits involved:
- [1] https://gitlab.gnome.org/GNOME/gnome-shell/commit/a46af9e
- [2] https://gitlab.gnome.org/GNOME/gnome-shell/commit/4489426

And [1] was already backported during the version bump
> # rpm -q gnome-shell --changelog
> ......
> Thu Jan 04 21:42:00 UTC 2018 - zaitor@opensuse.org
> 
> - Update to version 3.26.2+20171218.15b1810a6:
>   + background: don't leak wall clock when background changes.
>   + dateMenu:
>     - Fix possible crash with unknown locations.
>     - Ignore malformed world-clocks settings.
>   + dash:
>     - Do not shadow ClutterActor's destroy().
>     - Make sure item labels are only destroyed once.
>   + status/keyboard: Reset menuItems and Label objects on change.

I will backport [2] later