Akonadi does not handle vCal events correctly when there's a specific RECURRENCE-ID;TZID set. I'm using Korganizer & Akonadi with Office365 (EWS) and in vCal events pulled from there there is RECURRENCE-ID;TZID set and if it's set to "Europe/Budapest:20191210T100000" Korganizer and konsolecalendar are not able to show these events at all (konsolecalendar crashes and Korganizer says: org.kde.pim.akonadicalendar: Can't find any incidence with ui XXX even the event with that ID exists: I'm even able examine the event using akonadiconsole).
When I manually remove that RECURRENCE-ID;TZID line from vcal event everything works normally. And if I set it to RECURRENCE-ID;TZID=Europe/Budapest:20191210 everything works normally. Only if the line continues with that ...T100000 (Europe/Budapest:20191210T100000) this bug appears.
STEPS TO REPRODUCE
1. Create a vCalendar file where is RECURRENCE-ID;TZID with value: Europe/Budapest:20191210T100000
2. Korganizer does not show these events at all and konsolecalendar crashes when trying to show this specific event by using --uid argument
Events should show up in Korganizer and in konsolecalendar normally.
Operating System: openSUSE Leap 15.1
KDE Plasma Version: 5.17.4
KDE Frameworks Version: 5.64.0
Qt Version: 5.13.1
Kernel Version: 4.12.14-lp151.28.36-default
OS Type: 64-bit
Processors: 4 × AMD Opteron™ Processor 6272
Memory: 5.8 GiB of RAM
Akonadi version: 19.12.0-lp151.108.1.x86_64
I copied the konsolecalendar crash information here: https://pastebin.com/Mriy6z9s