[Bug 1902969] [NEW] Thunder freezes UI when changing from title bars to CSD

[motang]

Public bug reported:

I noticed a bug. In Thunderbird (deb or snap) version open and right
click on the tab bar and choose customization and mess around with
showing title or not and close out of it the icon for TB is still in the
dock. If you click on the icon it locks up the UI.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: thunderbird 1:78.3.2+build1-0ubuntu1
ProcVersionSignature: Ubuntu 5.8.0-26.27-generic 5.8.14
Uname: Linux 5.8.0-26-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  mram       2160 F.... pulseaudio
 /dev/snd/controlC0:  mram       2160 F.... pulseaudio
BuildID: 20201006011220
CasperMD5CheckResult: skip
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Wed Nov  4 18:55:14 2020
DefaultProfileExtensions: extensions.sqlite corrupt or missing
DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
DefaultProfileLocales: extensions.sqlite corrupt or missing
DefaultProfilePrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/thunderbird/omni.ja:greprefs.js:732
DefaultProfilePrefSources: prefs.js
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
InstallationDate: Installed on 2020-10-04 (31 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Beta amd64 (20200930)
IpRoute:
 default via 192.168.1.1 dev eno1 proto dhcp metric 100 
 169.254.0.0/16 dev eno1 scope link metric 1000 
 192.168.1.0/24 dev eno1 proto kernel scope link src 192.168.1.45 metric 100
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profile1Extensions: extensions.sqlite corrupt or missing
Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile1Locales: extensions.sqlite corrupt or missing
Profile1PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/thunderbird/omni.ja:greprefs.js:732
Profile1PrefSources: prefs.js
Profile1Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile1 - LastVersion=78.0/20200629202523 (Out of date)
 Profile0 (Default) - LastVersion=78.3.2/20201006011220
RunningIncompatibleAddons: False
SourcePackage: thunderbird
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/26/2012
dmi.bios.release: 4.6
dmi.bios.vendor: Intel Corp.
dmi.bios.version: AGH6120H.86A.0015.2012.0926.1822
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DH61AGL
dmi.board.vendor: Intel Corporation
dmi.board.version: G71256-202
dmi.chassis.type: 3
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: sabc1
dmi.modalias: dmi:bvnIntelCorp.:bvrAGH6120H.86A.0015.2012.0926.1822:bd09/26/2012:br4.6:svnSystem76,Inc.:pnSableComplete:pvrsabc1:rvnIntelCorporation:rnDH61AGL:rvrG71256-202:cvnSystem76,Inc.:ct3:cvrsabc1:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: Sable Complete
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: sabc1
dmi.sys.vendor: System76, Inc.

** Affects: thunderbird (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug groovy

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https://bugs.launchpad.net/bugs/1902969

Title:
  Thunder freezes UI when changing from title bars to CSD

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