shotwell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()

[PhotonQyv]

I was in the process of merging several events in Shotwell (moving photos from one event into another), both events had the same name, as they were based on the dates the pictures were taken (EXIF info) when they were imported by Shotwell.

I'd already merged several similar events, by dragging the photos in one event on to the event I wanted to merge with in the navigation pane, with no trouble. For some reason this last merge caused the app to crash, which escalated up to a kdeinit crash.

Release: Ubuntu 18.04 Beta 2
Shotwell: 0.28.2-0ubuntu1

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: shotwell 0.28.2-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu4
Architecture: amd64
CurrentDesktop: KDE
Date: Thu Apr 12 10:19:22 2018
ExecutablePath: /usr/bin/shotwell
InstallationDate: Installed on 2018-04-10 (1 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
ProcCmdline: /usr/bin/shotwell
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f85b304fc31 <g_type_check_instance_is_fundamentally_a+49>: movzbl 0x14(%rdx),%eax
 PC (0x7f85b304fc31) ok
 source "0x14(%rdx)" (0x70000001c) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: shotwell
StacktraceTop:
 g_type_check_instance_is_fundamentally_a () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_ref () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_weak_ref_get () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: shotwell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance_is_fundamentally_a () from /tmp/apport_sandbox_u321dwlm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_ref () from /tmp/apport_sandbox_u321dwlm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_weak_ref_get () from /tmp/apport_sandbox_u321dwlm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /tmp/apport_sandbox_u321dwlm/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_main_context_dispatch () from /tmp/apport_sandbox_u321dwlm/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0