Public bug reported:

I don't know what causes it but frequently I see my journalctl being
spammed with gnome-shell errors (see attached journalctl snippet). If I
do nothing about it, then within a few hours gnome-shell is slow and may
eventually freeze. So I end up rebooting to reset the system and avoid a
freeze.

I'll keep my eye out for reproducers but in the mean time I wanted to
record this somewhere in case others see it.

This happens every couple of days on both my laptop and workstation and
both systems are running 19.10.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: gnome-shell 3.34.1-1ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1
Uname: Linux 5.3.0-19-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Nov 20 11:36:37 2019
DisplayManager: gdm3
InstallationDate: Installed on 2019-09-13 (67 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: mutter-common 3.34.1-1ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to eoan on 2019-09-19 (62 days ago)

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug eoan

** Attachment added: "snippet of journalctl for ~1min"
   
https://bugs.launchpad.net/bugs/1853351/+attachment/5306704/+files/journalctl.log

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https://bugs.launchpad.net/bugs/1853351

Title:
  Object St.Button has already been deallocated

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