Yes that theming.js around like 479 (on bionic) looks like a candidate
for calling the offending `meta_workspace_list_windows`:

    _dockIsNear: function() {
        if (this._dockActor.has_style_pseudo_class('overview'))
            return false;
        /* Get all the windows in the active workspace that are in the primary 
monitor and visible */
        let activeWorkspace = global.screen.get_active_workspace();
        let dash = this._dash;
        let windows = 
activeWorkspace.list_windows().filter(function(metaWindow) {
            return metaWindow.get_monitor() === dash._monitorIndex &&
                   metaWindow.showing_on_its_workspace() &&
                   metaWindow.get_window_type() != Meta.WindowType.DESKTOP;
        });

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1832869

Title:
  gnome-shell crashed with SIGSEGV in g_hash_table_iter_next →
  meta_display_list_windows → meta_workspace_list_windows →
  ffi_call_SYSV → ffi_call()

Status in gnome-shell package in Ubuntu:
  Confirmed
Status in gnome-shell-extension-dashtodock package in Ubuntu:
  Triaged

Bug description:
  The Ubuntu Error Tracker has been receiving reports about a problem regarding 
gnome-shell.  This problem was most recently seen with package version 
3.28.4-0ubuntu18.04.1, the problem page at 
https://errors.ubuntu.com/problem/d3f9725b7fae2763643521acfc58c734f829dd64 
contains more details, including versions of packages affected, stacktrace or 
traceback, and individual crash reports.
  If you do not have access to the Ubuntu Error Tracker and are a software 
developer, you can request it at http://forms.canonical.com/reports/.

  https://errors.ubuntu.com/problem/ac8df0b1e2d67e423c634fde1a3acecd3c381d58
  https://errors.ubuntu.com/problem/d3f9725b7fae2763643521acfc58c734f829dd64
  https://errors.ubuntu.com/problem/1e69eadeb69f4e2b8aa933205d2be3a8db4af36c
  https://errors.ubuntu.com/problem/6f7810166a3ae02cc8025514d6ffbbde10063e76
  https://errors.ubuntu.com/problem/1bfbc00c70cfe6f4f2b66b4efc86f5c089c28680

To manage notifications about this bug go to:
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