brisk-menu assert failure: brisk-menu: ../../src/xcb_io.c:259: poll_for_event: アサーション `!xcb_xlib_threads_sequence_lost' に失敗しました。

[ichro furuya]

Ubuntu MATE 18.04 (Japanese environment)

Kernel version: 4.15.0.20
Panel layout: Contemporary(Save Another Name: Delete the bottom bar)
Docky: 2.2.1.1-1

In advance,
"Menu" on the left of the top bar →System tools →Caja →Right click and select "Pin to favorites menu".

This time,
"Menu" on the left of the top bar →Favourites →Caja
→"Caja" (file manager) did not start, it crashed.

---

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: mate-applet-brisk-menu 0.5.0-7ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AssertionMessage: brisk-menu: ../../src/xcb_io.c:259: poll_for_event: アサーション `!xcb_xlib_threads_sequence_lost' に失敗しました。
CurrentDesktop: MATE
Date: Wed May 9 00:12:11 2018
ExecutablePath: /usr/lib/x86_64-linux-gnu/brisk-menu/brisk-menu
InstallationDate: Installed on 2018-05-07 (1 days ago)
InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcCmdline: /usr/lib/x86_64-linux-gnu/brisk-menu//brisk-menu
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=ja
 PATH=(custom, no user)
 LANG=ja_JP.UTF-8
Signal: 6
SourcePackage: brisk-menu
StacktraceTop:
 __assert_fail_base (fmt=0x7f57c98daa32 <error: Cannot access memory at address 0x7f57c98daa32>, assertion=assertion@entry=0x7f57c896e660 "!xcb_xlib_threads_sequence_lost", file=file@entry=0x7f57c896e4cb "../../src/xcb_io.c", line=line@entry=259, function=function@entry=0x7f57c896e908 "poll_for_event") at assert.c:92
 __GI___assert_fail (assertion=0x7f57c896e660 "!xcb_xlib_threads_sequence_lost", file=0x7f57c896e4cb "../../src/xcb_io.c", line=259, function=0x7f57c896e908 "poll_for_event") at assert.c:101
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
Title: brisk-menu assert failure: brisk-menu: ../../src/xcb_io.c:259: poll_for_event: アサーション `!xcb_xlib_threads_sequence_lost' に失敗しました。
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=0x7f57c98daa32 <error: Cannot access memory at address 0x7f57c98daa32>, assertion=assertion@entry=0x7f57c896e660 "!xcb_xlib_threads_sequence_lost", file=file@entry=0x7f57c896e4cb "../../src/xcb_io.c", line=line@entry=259, function=function@entry=0x7f57c896e908 <__PRETTY_FUNCTION__.14350> "poll_for_event") at assert.c:92
 __GI___assert_fail (assertion=assertion@entry=0x7f57c896e660 "!xcb_xlib_threads_sequence_lost", file=file@entry=0x7f57c896e4cb "../../src/xcb_io.c", line=line@entry=259, function=function@entry=0x7f57c896e908 <__PRETTY_FUNCTION__.14350> "poll_for_event") at assert.c:101
 poll_for_event (dpy=dpy@entry=0x55dc59183d60) at ../../src/xcb_io.c:256
 poll_for_response (dpy=dpy@entry=0x55dc59183d60) at ../../src/xcb_io.c:274
 _XEventsQueued (dpy=dpy@entry=0x55dc59183d60, mode=mode@entry=2) at ../../src/xcb_io.c:349