Bug#1026766: sweethome3d: Crashes with "Assertion `!xcb_xlib_threads_sequence_lost' failed"

[Louis-Philippe Véronneau]

Package: sweethome3d
Version: 7.0.2+dfsg-3
Severity: important

Dear maintainers,



This is the error message I get when it crashes:

=======================================================================
Java 3D: implicit antialiasing enabled
[xcb] Unknown sequence number while processing queue

[xcb] Aborting, sorry about that.

Aborted
=======================================================================

Cheers,


-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'stable'), (9, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.0.0-6-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE

Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages sweethome3d depends on:
ii  default-jre [java8-runtime]     2:1.17-73
ii  icedtea-netx                    1.8.8-2
ii  java-wrappers                   0.4
ii  libbatik-java                   1.16+dfsg-1
ii  libfreehep-graphics2d-java      2.4+dfsg-3
ii  libfreehep-graphicsbase-java    2.4+dfsg-3
ii  libfreehep-graphicsio-java      2.4+dfsg-3
ii  libfreehep-graphicsio-svg-java  2.4+dfsg-3
ii  libitext-java                   2.1.7-13
ii  libjava3d-java                  1.5.2+dfsg-17
ii  libsunflow-java                 0.07.2.svn396+dfsg-18
ii  openjdk-11-jre [java8-runtime]  11.0.17+8-2
ii  openjdk-17-jre [java8-runtime]  17.0.5+8-2
ii  openjdk-18-jre [java8-runtime]  18.0.2+9-2

Versions of packages sweethome3d recommends:
ii  sweethome3d-furniture  1.8-1

sweethome3d suggests no packages.

--
  ⢀⣴⠾⠻⢶⣦⠀
  ⣾⠁⢠⠒⠀⣿⡁  Louis-Philippe Véronneau
  ⢿⡄⠘⠷⠚⠋   po...@debian.org / veronneau.org
  ⠈⠳⣄

The latest version of sweethome3d on my system consistently crashes when I try to modify an existing file. [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called java: ../../src/xcb_io.c:278: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8

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