I'm being sincere with this question.

Today another event just disappeared! POOF! GONE! It's so frustrating. This is only one issue that has gone on for years.

Can anyone answer if the Calendar, Events, and Event Editor have been resolved in the new version Thunderbird 115 Supernova?

Mike.

I am serious that I would guess no one has any idea what you are asking about. I have read a lot of topics on this forum in the last 10 years or so and honestly, topics mentioning lost events are rare and generally involve synchronization issues with other devices like tablets and phones.

You did not mention the issue in your posts from last September, so when did this issue start to appear? I am guessing post 102 install.

Do you use the native caldav, or the provider for Google calendar add-on for your synchronization to google?