Here is my guess…when you pre-populate, how are you doing it? An array formula?
When you make a new item in your calendar and save it, where does it save? Does it save way at the bottom below all the pre-populated fields?
Because you have pre-populated it as you have, it’s seeing all those rows as filled already and making a new item far at the bottom.
Would be helpful if you linked your sheet instead of a screenshot.
and did you see this thread?
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