Back to the original topic "Reminder-Window does not close after all reminders have been dismissed or snoozed" the problem is still present in actual version 102.4.0. Tested on 3 different computers.
Probably your reminders are not lost. You just can't see them. Please compare these threadshttps://connect.mozilla.org/t5/discussions/thunderbird-102-2-1-tasks-not-showing-in-calendar/m-p/16067https://connect.mozilla.org/t5/discussions/thunderbird-10...
Updated Thunderbird 102.3.2 on computer 1 to Thunderbird 102.3.3 and Thunderbird 91.13.1 to Thunderbird 102.3.2 and then to Thunderbird 102.3.3 on computer 2. On both computers reminder-window did not close, after all reminders have been dismissed or...
Release Notes for Thunderbird 102.3.2 say, that this problem should be solved. But actually it is not. Updated Thunderbird 102.3.1 on computer 1 to Thunderbird 102.3.2 and Thunderbird 91.13.1 to Thunderbird 102.3.2 on computer 2. On both computers re...