I'm still not sure what to make of this bug. The fix linked upstream:

  https://gitlab.gnome.org/GNOME/mutter/-/issues/1345

is supposedly in mutter 3.35.2 but there are plenty of these crashes
after that:

https://errors.ubuntu.com/problem/fda12af21f79f7f1e23ab3cc830da47eca410baa

So it seems like at least one of those should not be linked here. That
said, if we don't see any more crashes in 3.36.6 and 3.38.1 then there's
nothing left to do and resolving the confusion is not required.

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https://bugs.launchpad.net/bugs/1558886

Title:
  gnome-shell crashed with SIGSEGV in
  _clutter_input_device_reset_scroll_info()

Status in Mutter:
  Unknown
Status in mutter package in Ubuntu:
  Fix Released
Status in mutter source package in Focal:
  Fix Released

Bug description:
  [ Impact ]

  Using Ubuntu 16.04 and 20.04 LTS Beta release. Was using gnome-shell
  and using Chrome web browser when computer became unresponsive to any
  commands or mouse clicks. About 3-4 minutes later a crash report
  popped up on my screen. I clicked report and now I am reporting this
  as a new bug as I have never had this happen before on previous
  versions of Ubuntu. I was attempting to copy and save an image from
  Google Chrome when this happened.

  Similar crash still happening, as per
  https://errors.ubuntu.com/problem/fda12af21f79f7f1e23ab3cc830da47eca410baa

  ----

  [  Test case ]

  Run xinput and figure device IDs for your mouse.
  Run this evil script with 9 changed (be sure to change both) to your id:

    for ((;;)) do xinput disable 9; echo Disabled; xinput enable 9; echo
  Enabled; done

  While the script runs, open some context menu in some program. It may require 
a few clicks due to evil script enabling/disabling mouse.
  This will sometimes crash GTK programs due to a mirror bug in GTK.

  GNOME Shell should not crash

  [ Regression potential ]

  Devices might be not be properly recognized when plugged and unplugged

  
  ----

  Description:  Ubuntu Xenial Xerus (development branch)
  Release:      16.04

  lostprophet@DigitalDamage:~$ apt-cache policy google-chrome-stable
  google-chrome-stable:
    Installed: 49.0.2623.75-1
    Candidate: 49.0.2623.75-1
    Version table:
   *** 49.0.2623.75-1 100
          100 /var/lib/dpkg/status

  ProblemType: CrashDistroRelease: Ubuntu 16.04
  Package: gnome-shell 3.18.4-0ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-14.30-generic 4.4.5
  Uname: Linux 4.4.0-14-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Thu Mar 17 22:20:56 2016
  DisplayManager: lightdm
  ExecutablePath: /usr/bin/gnome-shell
  InstallationDate: Installed on 2016-02-24 (22 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  ProcCmdline: /usr/bin/gnome-shell
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f634ba78320:        mov    0xe0(%rdi),%rax
   PC (0x7f634ba78320) ok
   source "0xe0(%rdi)" (0x000000e0) not located in a known VMA region (needed 
readable region)!
   destination "%rax" ok
  SegvReason: reading NULL VMASignal: 11SourcePackage: gnome-shell
  StacktraceTop:
   ?? () from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
   clutter_x11_handle_event () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
   ?? () from /usr/lib/libmutter.so.0
  Title: gnome-shell crashed with SIGSEGV in clutter_x11_handle_event()
  UpgradeStatus: Upgraded to xenial on 2016-03-03 (14 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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