Calendar Preview doesn't always handle times/timezones correctly

Bug Reports
1

Description

Some calendar ics-files show the wrong time in the calendar preview.

Could be related to: https://github.com/Foundry376/Mailspring/issues/1555

To Reproduce…

Steps to reproduce the behavior:

  1. Download the [valid ics file](https://www.mediafire.com/file/uwftybtvgc1s9za/ShouldBe1300CEST.ics/file), or make your own with the code at the bottom.
  2. Send it to yourself via email.
  3. The time in the mailspring preview should be 13:00 CEST! It is shown as 15:00 CEST
  4. The file can be opened with another calandar app and the correct time is shown

Expected Behavior

Displaying the correct time in the calendar preview.

Setup

  • OS and Version: Windows 11 (21H2)
    • Installation Method: installer
  • Mailspring Version: 1.10.5

Additional Context

I got the calender file from someone else. This person used Outlook. I also tested outlook and send a file to myself. This worked without problem.

Looking at the ics file, the problem might be the “Customized Time Zone” given there.

Code of the non working ics file:

BEGIN:VCALENDAR
PRODID:-//Microsoft Corporation//Outlook 16.0 MIMEDIR//EN
VERSION:2.0
METHOD:REQUEST
X-MS-OLK-FORCEINSPECTOROPEN:TRUE
BEGIN:VTIMEZONE
TZID:Customized Time Zone
BEGIN:STANDARD
DTSTART:16011028T030000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:16010325T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
ATTENDEE;CN="Me";RSVP=TRUE:mailto:aaaa@aaaa.de
CLASS:PUBLIC
CREATED:20220926T115042Z
DESCRIPTION: TEST
DTEND;TZID="Customized Time Zone":20220926T140000
DTSTAMP:20220926T110059Z
DTSTART;TZID="Customized Time Zone":20220926T130000
LAST-MODIFIED:20220926T115044Z
LOCATION:Testlocation
ORGANIZER;CN="aaa, aaa":mailto:aaaa@aaaa.de
PRIORITY:5
SEQUENCE:1
SUMMARY;LANGUAGE=de:Besprechung
TRANSP:OPAQUE
UID:040000008200E00074C5B7101A82E008000000002E28A38606CFD801000000000000000
	01000000047D884C2DB4E774C999AD742EBB79E5A
X-ALT-DESC;FMTTYPE=text/html:Testmessage
X-MICROSOFT-CDO-BUSYSTATUS:TENTATIVE
X-MICROSOFT-CDO-IMPORTANCE:1
X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY
X-MICROSOFT-DISALLOW-COUNTER:FALSE
X-MS-OLK-SENDER;CN="aaaa, aaaa":mailto:aaaa@aaa.de
END:VEVENT
END:VCALENDAR
2

I have the same problem in MACOS Ventura, the apointments shown in the calendar preview are 1 hr behind of the real time zone.

3

Same symptom for this (< redacted>) ICS file. Shows 10 a.m. CET in the preview. Everybody lives in Zurich, Central European Time = GMT+01:00.

BEGIN:VCALENDAR
PRODID:-//calendar
VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
DTSTART:20231103T090000
DTSTAMP:20231030T120844
DTEND:20231103T093000
LOCATION:<redacted>
UID:e1d02a2f-bd51-4994-9570-e7ff7b6b66bf
SUMMARY:<redacted>
DESCRIPTION:
CLASS:PRIVATE
BEGIN:VALARM
TRIGGER:-PT15M
ACTION:DISPLAY
DESCRIPTION:Reminder
END:VALARM
END:VEVENT
END:VCALENDAR
4

Hi, I have the same problem and can’t believe this bug has been around for so long.

Interestingly enough, even the email subject (which I suspect is auto generated) has the dates wrong. So maybe this issue is on the integration with Google Workspace rather than on the client side?

Worth noting that I downloaded Mailspring and installed email clients when I was in Seattle, and now I’m back in Melbourne, Australia. And the dates are exactly still stuck in Seattle.

So the workaround for me, for now, is to reconnect my email integration.

Problem

MacOS 15.4

Mailspring 1.16.0 (1.16.0)

Here’s a screenshot to say how annoyingly wrong the preview is. :crying_cat:

image
image541×679 39 KB

Solution

Here’s what worked for me.

  1. Remove the account
  2. Quit Mailspring
  3. Launch it again, add the account

image
image499×589 31.1 KB