Week view goes blank when changing weeks or when user screen focus changes.

[Balazs Pere]

Description: Ubuntu 20.04.2 LTS
Release: 20.04

gnome-calendar:
  Installed: 3.36.2-0ubuntu1
  Candidate: 3.36.2-0ubuntu1
  Version table:
 *** 3.36.2-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     3.36.1-1 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

Week view goes blank when changing weeks or when user screen focus changes.

[Balazs Pere (perebal-sze)]

When launching gnome-calendar, the week view (current week) appears for a second and disappear when the header (days of the week) is being written. After switching to previous and next weeks the week view is normal again. Returnig to the current week the week view is blank again.

[Balazs Pere (perebal-sze)]

Does anyone else experience this, or just me? With this issue the calendar is unusable, but I couldn't find any bug report about this. But this bug has been around for a long time.

[Balazs Pere (perebal-sze)]

I just tried it out: if I switch off google calendar (set up in Settings/Online accounts), everything is working as it should be. But I need google calendar.

[Balazs Pere (perebal-sze)]

When I switched off and on google calendar in gnome-calendar, this happened:

GcalTimeline:ERROR:../src/core/gcal-timeline.c:212:increase_completed_calendars: assertion failed: (self->completed_calendars <= g_hash_table_size (self->calendars))
Bail out! GcalTimeline:ERROR:../src/core/gcal-timeline.c:212:increase_completed_calendars: assertion failed: (self->completed_calendars <= g_hash_table_size (self->calendars))
Aborted (core dumped)

[Sebastien Bacher (seb128)]

Thank you for desktop environment and theme do you use? Could you add the journalctl log after triggering the issue to the bug?

[Launchpad Janitor (janitor)]

[Expired for gnome-calendar (Ubuntu) because there has been no activity for 60 days.]