[korganizer] [Bug 481305] New: Recurrence deletion for events created in another timezone does not work

[tusooa]

https://bugs.kde.org/show_bug.cgi?id=481305

            Bug ID: 481305
           Summary: Recurrence deletion for events created in another
                    timezone does not work
    Classification: Applications
           Product: korganizer
           Version: unspecified
          Platform: Other
                OS: Other
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: incidence editors
          Assignee: kdepim-bugs at kde.org
          Reporter: tusooa at kazv.moe
  Target Milestone: ---

SUMMARY
***
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See
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***
If a recurring event is created in another timezone, and the date on which the
event falls in your local timezone is different from the date on which it falls
in the creation timezone, deleting one recurrence will not work.

STEPS TO REPRODUCE
1. Set system timezone to America/Toronto
2. Create an event from 2023-06-18 2:00 AM **UTC** to 3:00 AM **UTC**.
3. Set the recurrence to "Repeat weekly, every 1 week" on: Sunday, ends: never
4. In the Agenda view, delete the instance on 2024-02-17 (this is a Saturday,
but the corresponding UTC time falls on a Sunday). In the popup dialog, click
"Delete Current."

OBSERVED RESULT
The recurrence is not deleted. If you Edit the event again, you can see that
2024-02-17 is set as an exception.

EXPECTED RESULT
The recurrence should be deleted. If you Edit the event again, you should see
that 2024-02-18 (not 17) is set as an exception.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 6.6.13-gentoo-x86_64 / 5.27.10
(available in About System)
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.114.0
Qt Version: 5.15.12

ADDITIONAL INFORMATION

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