That's actually an upstream bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1664607
** Bug watch added: Mozilla Bugzilla #1664607 https://bugzilla.mozilla.org/show_bug.cgi?id=1664607 ** Also affects: thunderbird via https://bugzilla.mozilla.org/show_bug.cgi?id=1664607 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1895898 Title: Thunderbird 78.2.2-ubuntu does not show folders etc. Status in Mozilla Thunderbird: Unknown Status in thunderbird package in Ubuntu: Fix Committed Bug description: Happened on upgrade from 78.2.1 to 78.2.2 lost all folder views .. Groovy .. regular updates via proposed..etc. (xubuntu flavour) Installed thunderbird 78.2.2 from thunderbird.net into personal home directory works properly.. so it is an ubuntu regression issue .. something has gone missing from the UI that puts folders on the screen (LH column) .. view toggles do nothing in the ubuntu version .. Also F8 split view (RHS) also is not functioning ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: thunderbird 1:78.2.2+build1-0ubuntu1 ProcVersionSignature: Ubuntu 5.8.0-19.20-generic 5.8.8 Uname: Linux 5.8.0-19-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.20.11-0ubuntu45 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: derk 921 F.... pulseaudio /dev/snd/controlC0: derk 921 F.... pulseaudio BuildID: 20200908210243 CasperMD5CheckResult: skip Channel: Unavailable CurrentDesktop: XFCE CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Wed Sep 16 17:30:48 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 2020-05-19 (120 days ago) InstallationMedia: Xubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200519) IpRoute: default via 192.168.4.1 dev wlp2s0 proto dhcp metric 600 169.254.0.0/16 dev wlp2s0 scope link metric 1000 192.168.4.0/24 dev wlp2s0 proto kernel scope link src 192.168.4.141 metric 600 MostRecentCrashID: bp-8c597886-302c-42d4-af10-23ca20200612 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 Profile2Extensions: extensions.sqlite corrupt or missing Profile2IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) Profile2Locales: extensions.sqlite corrupt or missing Profile2PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/thunderbird/omni.ja:greprefs.js:732 Profile2PrefSources: prefs.js Profile2Themes: extensions.sqlite corrupt or missing Profiles: Profile2 - LastVersion=78.2.2/20200908210243 Profile1 - LastVersion=78.2.2/20200908210243 Profile0 (Default) - LastVersion=78.2.2/20200908210243 RunningIncompatibleAddons: False SourcePackage: thunderbird SubmittedCrashIDs: bp-8c597886-302c-42d4-af10-23ca20200612 bp-8fe41ba0-2507-41a8-977f-d75540200406 bp-d6cc8f6f-72e6-48d0-a23a-a395b0200330 bp-cb0c8ae9-db5c-4043-acc6-29a0b0191209 bp-35463351-2c6b-416d-90ec-31f880191021 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/03/2019 dmi.bios.release: 15.42 dmi.bios.vendor: AMI dmi.bios.version: F.42 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 85B3 dmi.board.vendor: HP dmi.board.version: 91.42 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.ec.firmware.release: 91.42 dmi.modalias: dmi:bvnAMI:bvrF.42:bd07/03/2019:br15.42:efr91.42:svnHP:pnHPLaptop17-ca1xxx:pvr:rvnHP:rn85B3:rvr91.42:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV HP Notebook dmi.product.name: HP Laptop 17-ca1xxx dmi.product.sku: 4LX67UA#ABL dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1895898/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp