gnome-shell crashed with signal 5 in g_log_default_handler()

[Knarf]

after boot

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.26.2-0ubuntu2
ProcVersionSignature: Ubuntu 4.14.0-16.19-generic 4.14.12
Uname: Linux 4.14.0-16-generic x86_64
ApportVersion: 2.20.8-0ubuntu8
Architecture: amd64
CrashCounter: 1
CurrentDesktop: GNOME-Greeter:GNOME
Date: Tue Feb 6 09:55:52 2018
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/false
Signal: 5
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_log_default_handler () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? ()
 g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_log () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gnome-shell crashed with signal 5 in g_log_default_handler()
UpgradeStatus: Upgraded to bionic on 2017-12-04 (64 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 _g_log_abort (breakpoint=1) at ../../../../glib/gmessages.c:554
 g_log_default_handler (log_domain=<optimized out>, log_level=<optimized out>, message=<optimized out>, unused_data=<optimized out>) at ../../../../glib/gmessages.c:3051
 default_log_handler (log_domain=log_domain@entry=0x7fb653e02b93 "mutter", log_level=log_level@entry=6, message=message@entry=0x564462cce5c0 "Connection to xwayland lost", data=data@entry=0x0) at ../src/main.c:315
 g_logv (log_domain=0x7fb653e02b93 "mutter", log_level=G_LOG_LEVEL_ERROR, format=<optimized out>, args=args@entry=0x7ffef2cd1860) at ../../../../glib/gmessages.c:1341
 g_log (log_domain=log_domain@entry=0x7fb653e02b93 "mutter", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7fb653e13af0 "Connection to xwayland lost") at ../../../../glib/gmessages.c:1403

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1556601, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.