Appointments do not show in the app but are created in the synchronized calendar

[MichaelMeierOneFive]

Checklist

• I can reproduce the bug with the latest versions.
• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs), in the README and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report may get dismissed otherwise.
• This issue contains only one bug.

Affected Android/Custom ROM version

Orphene OS, release 2025112100

Affected device model

Pixel 7a

How did you install the apps?

F-Droid / IzzyOnDroid

Which apps are affected?

Calendar

Steps to reproduce the bug

1. Create a calendar for each of two users on a private NAS (Synology)
2. Add the two calendars to be synchronized through DAVx5
3. Activate the CalDAV sybchronization for both calendars
4. Select both calendar accounts
5. Create an appointment in each account

Expected behavior

If both calendars are connected and synchonized propperly, I expect to see the appointments of both calendars in the app and to be able to create, delete, and change them.

Actual behavior

Both calendars are connected and synchonized propperly, as DAVx5 connects without errors. Moreover, I can create appointments for both calendars in the app and they are thus synchonized accordingly. However, only the appointments of one calendar are visible, whereas those of the second calendar cannot be seen.

Screenshots/Screen recordings

The appointments of calendar1 are visible, whereas those of calendar2 cannot be seen.

App_calendarView.pdf

App_settings1.pdf

App_settings2.pdf

DAVx5_calendar1.pdf

DAVx5_calendar1_settings.pdf

DAVx5_calendar2.pdf

DAVx5_calendar2_settings.pdf

Thunderbird_calendarView.pdf

Additional information

Interstingly, as I de- and reinstalled the calendar app several times, (1) it was always the same calendar account that had this issue and (2) after some reinstallations, some daily appointments of the problematic calendar appeared in the app, whereas the hourly appointments were never visible.
In addition, both calendars are also synchonized on my PC through Thunderbird, where I see all appointments for both calendars.

[naveensingh]

Issues concerning a specific Fossify app belong in that app's dedicated repository. Please create this in the Calendar repo.