xfce4-notifyd crashed with signal 7 in malloc_consolidate()

[Don Forigua]

I have a lot firefox notifications and it crash

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: xfce4-notifyd 0.4.1-1
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CrashCounter: 1
Date: Mon Feb 19 12:19:33 2018
ExecutablePath: /usr/lib/x86_64-linux-gnu/xfce4/notifyd/xfce4-notifyd
ProcCmdline: /usr/lib/x86_64-linux-gnu/xfce4/notifyd/xfce4-notifyd
ProcEnviron:
 LANG=es_CO.UTF-8
 LANGUAGE=es_CO:es
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
Signal: 7
SourcePackage: xfce4-notifyd
StacktraceTop:
 malloc_consolidate (av=av@entry=0x7fd3569cbc20 <main_arena>) at malloc.c:4492
 _int_malloc (av=0x7fd3569cbc20 <main_arena>, bytes=1352) at malloc.c:3706
 __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3506
 g_malloc0 () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
Title: xfce4-notifyd crashed with signal 7 in malloc_consolidate()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 malloc_consolidate (av=av@entry=0x7fd3569cbc20 <main_arena>) at malloc.c:4492
 _int_malloc (av=0x7fd3569cbc20 <main_arena>, bytes=1352) at malloc.c:3706
 __libc_calloc (n=n@entry=1, elem_size=elem_size@entry=1352) at malloc.c:3506
 g_malloc0 (n_bytes=1352) at ../../../../glib/gmem.c:124
 gtk_css_node_set_property (object=<optimized out>, property_id=32767, value=<optimized out>, pspec=0x16a7885594f9c500) at ../../../../gtk/gtkcssnode.c:224

[Launchpad Janitor (janitor)]

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

[Theo Linkspfeifer (lastonestanding)]

Most likely a duplicate of bug 1744667.