gnome-software crashed with SIGSEGV in gs_page_authenticate_cb → g_cclosure_marshal_VOID__BOOLEANv → _g_closure_invoke_va → g_signal_emit_valist → g_signal_emit

[adredz]

Steps to reproduce:
1. Open Software
2. Install onlyoffice
3. Click "Installed" apps tab
4. Click onlyoffice item from the list. The next page will show you a details page with "Install" button instead of something like "Installing". During this time, the indicator that tells me that onlyoffice is installing in the background is gone.
5. Click the "Install" button. I expected it should resume installing cos I know it still is in the background. But it prompted me to enter my password again. I clicked "Cancel" then it crashed. It was able to successfully onlyoffice though.

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-software 3.27.90-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: ubuntu-communitheme:ubuntu:GNOME
Date: Sat Mar 3 09:16:47 2018
ExecutablePath: /usr/bin/gnome-software
InstallationDate: Installed on 2018-02-06 (24 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180206)
InstalledPlugins:
 gnome-software-plugin-flatpak N/A
 gnome-software-plugin-limba N/A
 gnome-software-plugin-snap 3.27.90-1ubuntu1
ProcCmdline: /usr/bin/gnome-software --gapplication-service
ProcEnviron:
 LANGUAGE=en_PH:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_PH.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x563c62cc6a30: rcl $0x15,%ch
 PC (0x563c62cc6a30) in non-executable VMA region: 0x563c62c22000-0x563c67189000 rw-p [heap]
 source "$0x15" ok
 destination "%ch" ok
SegvReason: executing writable VMA [heap]
Signal: 11
SourcePackage: gnome-software
StacktraceTop:
 ()
 ()
 g_cclosure_marshal_VOID__BOOLEANv () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-software crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 gs_page_authenticate_cb (dialog=0x563c665ec300, response_type=GTK_RESPONSE_CANCEL, user_data=0x563c643cb2d0) at ../src/gs-page.c:87
 g_cclosure_marshal_VOID__BOOLEANv (closure=<optimized out>, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0x563c63b936a0) at ../../../../gobject/gmarshal.c:978
 _g_closure_invoke_va (closure=0x563c63f0d1a0, return_value=0x0, instance=0x563c665ec300, args=0x7ffc07f0cad0, n_params=1, param_types=0x563c63b936a0) at ../../../../gobject/gclosure.c:867
 g_signal_emit_valist (instance=0x563c665ec300, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7ffc07f0cad0) at ../../../../gobject/gsignal.c:3300