Event notification fires after being deleted

[pudup]

Checklist

• [X] I can reproduce the bug with the latest version given here.
• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one bug.
• [X] I have read and understood the contribution guidelines.

Affected app version

1.0.3

Affected Android/Custom ROM version

Stock 13 Motorola

Affected device model

Moto G

How did you install the app?

F-Droid / IzzyOnDroid

Steps to reproduce the bug

1. Create a repeating event, in my case it's weekly
2. Make sure the event has reminders
3. Delete the event for a given day but not all
4. Reboot

Expected behavior

No notification for deleted event on the deleted day

Actual behavior

Notification fires to remind about the event after a reboot.

Screenshots/Screen recordings

No response

Additional information

Other calendar apps on the same caldav do not have this issue. Only happens after full system reboots. Does not happen during regular use.

Happens even if the app is reinstalled and resynced to the caldav.