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Cannot snooze or delete calendar reminders

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I use the Thunderbird calendar in version 147.0.1. The calendar syncs with CalDav and works great. Although when the reminder pop-up appears i am not able to snooze (postpone) an event or delete na event. Nothing happens and the reminder keeps popping up every 5 minutes (as in the settings) untill the event has passed. Even worse, when i enable show missed missed events, i cannot even delete the old events in the list.

I use the Thunderbird calendar in version 147.0.1. The calendar syncs with CalDav and works great. Although when the reminder pop-up appears i am not able to snooze (postpone) an event or delete na event. Nothing happens and the reminder keeps popping up every 5 minutes (as in the settings) untill the event has passed. Even worse, when i enable show missed missed events, i cannot even delete the old events in the list.

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