If you enable the "Edit events and tasks in a tab instead of in a dialog window" setting in the preferences, then there doesn't seem to be any way of accessing the event menus. This means that there's no way of setting the time zone of an event.
ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: thunderbird 1:91.1.1+build2-0ubuntu1
ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13
Uname: Linux 5.13.0-16-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu69
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: alistair 2076 F.... pulseaudio
/dev/snd/pcmC0D0p: alistair 2076 F...m pulseaudio
BuildID: 20210916142849
CasperMD5CheckResult: unknown
Channel: Unavailable
CurrentDesktop: Unity:Unity7:ubuntu
Date: Thu Sep 30 10:28:55 2021
ForcedLayersAccel: False
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
IncompatibleExtensions:
Lightning - {e2fda1a4-762b-4020-b5ad-a41df1933103}
English (GB) Language Pack - <email address hidden>
Thunderbird (default) - {972ce4c6-7e08-4474-a285-3208198ce6fd}
InstallationDate: Installed on 2020-07-14 (442 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
IpRoute:
default via 172.30.3.254 dev wlp0s20f3 proto dhcp metric 600
10.0.0.0/24 dev wg0 proto kernel scope link src 10.0.0.2
169.254.0.0/16 dev wg0 scope link metric 1000
172.30.0.0/22 dev wlp0s20f3 proto kernel scope link src 172.30.0.92 metric 600
PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/thunderbird/omni.ja:greprefs.js:359
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=91.1.1/20210916142849 (In use)
RebootRequiredPkgs: Error: path contained symlinks.
RunningIncompatibleAddons: True
SourcePackage: thunderbird
UpgradeStatus: Upgraded to impish on 2021-09-24 (6 days ago)
dmi.bios.date: 06/21/2021
dmi.bios.release: 1.19
dmi.bios.vendor: LENOVO
dmi.bios.version: N2WET29W (1.19 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20U9CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0R32862 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.8
dmi.modalias: dmi:bvnLENOVO:bvrN2WET29W(1.19):bd06/21/2021:br1.19:efr1.8:svnLENOVO:pn20U9CTO1WW:pvrThinkPadX1CarbonGen8:skuLENOVO_MT_20U9_BU_Think_FM_ThinkPadX1CarbonGen8:rvnLENOVO:rn20U9CTO1WW:rvrSDK0R32862WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon Gen 8
dmi.product.name: 20U9CTO1WW
dmi.product.sku: LENOVO_MT_20U9_BU_Think_FM_ThinkPad X1 Carbon Gen 8
dmi.product.version: ThinkPad X1 Carbon Gen 8
dmi.sys.vendor: LENOVO
Confirmed, it seems an upstream issue to report to https:/