If I open a shared calendar from another user, it works perfectly for the first time. When I deselect the calendar it is correctly not showing anymore. When I select the calendar again, the entries are shown for around 1-2 seconds and then every entry disappears and won't show again (regardless if it is deselected and selected again or Thunderbird is restarted) until the next day.
Same issue here. Also happens if I invite attendees for an event. Zooming in and out sometimes makes it persistent but it usually takes quite a few tries.
If I open a shared calendar from another user, it works perfectly for the first time. When I deselect the calendar it is correctly not showing anymore. When I select the calendar again, the entries are shown for around 1-2 seconds and then every entry disappears and won't show again (regardless if it is deselected and selected again or Thunderbird is restarted) until the next day.