calendar appears empty #1386

Checklist

• I can reproduce the bug with the latest version given here.
• 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) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.
• I have read and understood the contribution guidelines.

Affected app version

1.11.0

Affected Android/Custom ROM version

Android 10

Affected device model

Moto G Play

How did you install the app?

Google Play Store

Which calendar service or provider do you use, if any?

n/a

Which sync adapter app do you use for calendar synchronization, if any?

n/a

Steps to reproduce the bug

Opened app, my calendar was empty. Switched to "Simple Event List", still empty.
Flailed about, enabled Google Calendar app, tried restoring from .ics file (repeatedly), disabled Google Calendar app
gave up, manually added Event I had intended to modify, saved new event, suddenly entire calendar was populated, including Events created after the last .ics file was created.

Expected behavior

expected to see my calendar whenever I look at my calendar

Actual behavior

my calendar appeared to be empty

Screenshots/Screen recordings

No response

Additional information

It is the considered opinion of Google's A.I. that the problem resulted from me not looking at my calendar for long enough that Android severed the connection between the calendar app and its database, but that the calendar app did not work hard enough to test and restore the connection. And that the act of actually writing a new event was enough to cause the app to properly reestablish its connection to the database.

I was forced to lie and check the box that said I could reproduce the issue with the latest version. I did not download the latest version. I am unable to reproduce the bug, even with Google A.I. providing a never-ending stream of suggestions: tried setting the toggle in Developer Options for "Don't Keep Activities" -- didn't reproduce the problem; tried setting Background Process Limit to "No background processes" -- didn't reproduce it. Then it became Google A.I.'s opinion that what was needed was for me to go several days without looking at my calendar. That is the point at which I despaired of reproducing the problem.

Since I can't reproduce the problem, I see no point in updating my copy of the app.