bamfdaemon crashed with SIGSEGV in sn_xcb_display_new()

Get that crash with a ubuntu-default session login (unity 7)
note: i never got that issue with a gnome-shell session.

ProblemType: Crash
DistroRelease: Ubuntu 17.04
Package: bamfdaemon 0.5.3+16.10.20160929-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-11.13-generic 4.10.1
Uname: Linux 4.10.0-11-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Wed Mar 8 21:58:08 2017
ExecutablePath: /usr/lib/x86_64-linux-gnu/bamf/bamfdaemon
ProcCmdline: /usr/lib/x86_64-linux-gnu/bamf/bamfdaemon
ProcEnviron:
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
SegvAnalysis:
 Segfault happened at: 0x7f94ec2c4e39 <sn_xcb_display_new+265>: mov 0x8(%rax),%edx
 PC (0x7f94ec2c4e39) ok
 source "0x8(%rax)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: bamf
StacktraceTop:
 sn_xcb_display_new () from /usr/lib/x86_64-linux-gnu/libstartup-notification-1.so.0
 sn_display_new () from /usr/lib/x86_64-linux-gnu/libstartup-notification-1.so.0
 wnck_screen_get () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
 bamf_legacy_screen_get_default ()
 ?? ()
Title: bamfdaemon crashed with SIGSEGV in sn_xcb_display_new()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom colord dip lpadmin nvidia-persistenced plugdev sambashare sudo users