This issue in evolution-data-server seems to describe the problem. https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/276
** Bug watch added: gitlab.gnome.org/GNOME/evolution-data-server/-/issues #276 https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/276 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1923893 Title: After rescheduling an event, calendar alerts appear for the old time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1923893/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs