gnome-calendar crashed with SIGSEGV in gtk_image_clear()

Not sure why this came up.

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-calendar 3.28.0-1
ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
Uname: Linux 4.15.0-12-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Sun Mar 18 14:44:52 2018
ExecutablePath: /usr/bin/gnome-calendar
InstallationDate: Installed on 2018-03-16 (1 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180316)
ProcCmdline: /usr/bin/gnome-calendar --gapplication-service
ProcEnviron:
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7f20c378b517 <gtk_image_clear+7>: mov 0x28(%rdi),%rbp
 PC (0x7f20c378b517) ok
 source "0x28(%rdi)" (0x00000028) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-calendar
StacktraceTop:
 gtk_image_clear () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? ()
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-calendar crashed with SIGSEGV in gtk_image_clear()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo