As mentioned in title, latest update breaks libinput-gestures. There was an update of libinput-tools package which is required for gestures. I assume that this breaks it.
Edit:
After digging in debug mode this was shown:
adam@zenbook ~
╰─➤ libinput-gestures -d
libinput-gestures: session KDE+x11 on Linux-4.17.2-1-default-x86_64-with-glibc2.3.4, python 3.6.5, libinput 1.11.1
Gestures configured in ~/.config/libinput-gestures.conf:
swipe up _internal ws_up
swipe down _internal ws_down
swipe left xdotool key alt+Right
swipe right xdotool key alt+Left
pinch in xdotool key Ctrl+F10
pinch out xdotool key Alt+F10
Command ''libinput', 'list-devices']' died with <Signals.SIGSEGV: 11>.
Can not see any devices, did you add yourself to the input group and log out/in?
Could not determine touchpad device.
And a lot of these in journal:
cze 28 20:25:48 zenbook systemd-coredump[1946]: Process 1943 (libinput-list-d) of user 1000 dumped core.
Did you report it as a bug yet?
No, where should I report it?
I’m not familiar with libinput-gestures, but noticed the following from your opening post
Can not see any devices, did you add yourself to the input group and log out/in?
Could not determine touchpad device.
Is the user a member of the input group ?
It’s never been a requirement for libinput historically, but perhaps gestures works differently? I’ve read some reports (different distros) describing similar eg
http://www.lorenzobettini.it/2017/02/touchpad-gestures-in-linux-kde-with-libinput-gestures/
Yes, the user is a member of input group. I’ve add myself during initial setup of libinput-gestures. It was working before last update. I’ll try to submit a bug today.
That’s my first bug submitted, so if something wrong, please correct me 
https://bugzilla.opensuse.org/show_bug.cgi?id=1099620
Well done. You’ll be notified if any further information/testing is required, or advice given etc. 
My bug was removed from bugzilla. It just disappeared. :\
Hmm that’s strange, 8 can’t fin it in my bug list… ok, that’s fine.
Solved. Fix in next update. rotfl!
I just read the bug report. That is good news! 