The offending line of JavaScript is the one that says "Window gone". I
guess maybe a NULL pointer?

    _switchWorkspaceDone(shellwm) {
        let switchData = this._switchData;
        if (!switchData)
            return;
        this._switchData = null;

        for (let i = 0; i < switchData.windows.length; i++) {
                let w = switchData.windows[i];
                if (w.window.is_destroyed()) // Window gone
                    continue;
                if (w.window.get_parent() == switchData.outGroup) {
                    w.window.reparent(w.parent);
                    w.window.hide();
                } else
                    w.window.reparent(w.parent);
        }


** Summary changed:

- gnome-shell crashes with SIGSEGV at windowManager.js:1787 when running 
Android emulator (QEMU)
+ gnome-shell crashes with SIGSEGV in meta_window_actor_is_destroyed() called 
from windowManager.js:1787 when running Android emulator (QEMU)

** Changed in: gnome-shell (Ubuntu)
       Status: Incomplete => Confirmed

** Summary changed:

- gnome-shell crashes with SIGSEGV in meta_window_actor_is_destroyed() called 
from windowManager.js:1787 when running Android emulator (QEMU)
+ gnome-shell crashes with SIGSEGV in meta_window_actor_is_destroyed(self=NULL) 
called from windowManager.js:1787 when running Android emulator (QEMU)

** Description changed:

+ https://errors.ubuntu.com/problem/cb400a6f83ed57af8bb117cf84d5ed6d7e2ffcee
+ 
  Switching workspace with the Android Emulator running will blink the
  screen as if gnome restarted, if I switch workspace one more time, it
  will completely crash and I will need to log in again.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: gnome-shell 3.28.3-0ubuntu0.18.04.4
  Uname: Linux 4.20.3-acso x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jan 19 20:05:34 2019
  DisplayManager: gdm3
  GsettingsChanges:
-  b'org.gnome.shell' b'favorite-apps' redacted by apport
-  b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
+  b'org.gnome.shell' b'favorite-apps' redacted by apport
+  b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
  InstallationDate: Installed on 2019-01-15 (4 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 
(20180725)
  SourcePackage: gnome-shell
  UpgradeStatus: No upgrade log present (probably fresh install)

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Desktop Bugs, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1812527

Title:
  gnome-shell crashes with SIGSEGV in
  meta_window_actor_is_destroyed(self=NULL) called from
  windowManager.js:1787 when running Android emulator (QEMU)

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